Scripts/ShrineOfTheStorm: Implement Lord Stormsong encounter (#31317)

5 files changed, 695 insertions, 9 deletions

diff --git a/src/server/game/Spells/SpellMgr.cpp b/src/server/game/Spells/SpellMgr.cpp
index edd02483b46..0dc27c80927 100644
--- a/src/server/game/Spells/SpellMgr.cpp
+++ b/src/server/game/Spells/SpellMgr.cpp
@@ -4968,7 +4968,7 @@ void SpellMgr::LoadSpellInfoCorrections()
     });
 
     // Conversation
-    ApplySpellFix({ 274668, 274669 }, [](SpellInfo* spellInfo)
+    ApplySpellFix({ 274668, 274669, 274622, 274640, 274641, 274674, 274675 }, [](SpellInfo* spellInfo)
     {
         ApplySpellEffectFix(spellInfo, EFFECT_0, [](SpellEffectInfo* spellEffectInfo)
         {
diff --git a/src/server/scripts/KulTiras/ShrineOfTheStorm/boss_lord_stormsong.cpp b/src/server/scripts/KulTiras/ShrineOfTheStorm/boss_lord_stormsong.cpp
new file mode 100644
index 00000000000..6b69fda5482
--- /dev/null
+++ b/src/server/scripts/KulTiras/ShrineOfTheStorm/boss_lord_stormsong.cpp
@@ -0,0 +1,645 @@
+/*
+ * This file is part of the TrinityCore Project. See AUTHORS file for Copyright information
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "AreaTrigger.h"
+#include "AreaTriggerAI.h"
+#include "Conversation.h"
+#include "ConversationAI.h"
+#include "Creature.h"
+#include "GridNotifiersImpl.h"
+#include "InstanceScript.h"
+#include "Map.h"
+#include "MotionMaster.h"
+#include "ObjectAccessor.h"
+#include "ScriptMgr.h"
+#include "ScriptedCreature.h"
+#include "SpellAuraEffects.h"
+#include "SpellScript.h"
+#include "TemporarySummon.h"
+#include "Vehicle.h"
+#include "shrine_of_the_storm.h"
+
+enum LordStormsongSpells
+{
+    SPELL_ANCIENT_MINDBENDER          = 269131,
+    SPELL_CONVERSATION                = 274622,
+    SPELL_CONVERSATION_ALLIANCE_INTRO = 274640,
+    SPELL_CONVERSATION_ALLIANCE_OUTRO = 274674,
+    SPELL_CONVERSATION_HORDE_INTRO    = 274641,
+    SPELL_CONVERSATION_HORDE_OUTRO    = 274675,
+    SPELL_DARK_BINDING                = 274646,
+    SPELL_DISCIPLE_OF_THE_VOL_ZITH    = 269289,
+    SPELL_ENERGIZE                    = 269396, // Serverside
+    SPELL_EXPLOSIVE_VOID              = 269104,
+    SPELL_FIXATE                      = 269103,
+    SPELL_MIND_REND                   = 268896,
+    SPELL_RELEASE_VOID                = 274711,
+    SPELL_RIDE_VEHICLE                = 46598,
+    SPELL_SURRENDER_TO_THE_VOID       = 269242,
+    SPELL_VOID_BOLT                   = 268347,
+    SPELL_WAKEN_THE_VOID_AREATRIGGER  = 269094,
+    SPELL_WAKEN_THE_VOID_SUMMON       = 269095,
+    SPELL_WAKEN_THE_VOID_AREA         = 269097
+};
+
+enum LordStormsongEvents
+{
+    EVENT_VOID_BOLT = 1,
+    EVENT_MIND_REND,
+    EVENT_WAKEN_THE_VOID,
+    EVENT_CHECK_POWER,
+
+    EVENT_OUTRO
+};
+
+enum LordStormsongTexts
+{
+    SAY_MINDBENDER_WARNING = 0
+};
+
+enum LordStormsongActions
+{
+    ACTION_START_INTRO = 1,
+    ACTION_START_OUTRO
+};
+
+enum LordStormsongMisc
+{
+    DISPLAY_POWERID             = 425,
+
+    NPC_QUEEN_AZSHARA           = 139963,
+    NPC_ANCIENT_MINDBENDER      = 137051,
+    NPC_WATER_STALKER           = 82347,
+
+    CONVO_ACTOR_BROTHER_PIKE    = 65078,
+    CONVO_ACTOR_REXXAR          = 65085,
+
+    PATH_INTRO                  = 13997000,
+    PATH_OUTRO                  = 13997001,
+
+    WAYPOINT_BOSS_INTRO         = 11,
+    WAYPOINT_BOSS_OUTRO         = 2
+};
+
+constexpr Position IntroPosition = { 3608.3933f, -1379.824f, 160.573f, 4.370550f };
+
+// 134060 - Lord Stormsong
+struct boss_lord_stormsong : public BossAI
+{
+    boss_lord_stormsong(Creature* creature) : BossAI(creature, DATA_LORD_STORMSONG) { }
+
+    void JustAppeared() override
+    {
+        me->SetPowerType(POWER_ENERGY);
+        me->SetPower(POWER_ENERGY, 55); // Energy bar is bugged on retail, but its working fine
+        me->SetOverrideDisplayPowerId(DISPLAY_POWERID); // No aura handle
+
+        if (instance->GetData(DATA_LORD_STORMSONG_INTRO) == DONE)
+            me->SetImmuneToPC(false);
+    }
+
+    void DespawnMindbenders()
+    {
+        std::list<Creature*> mindbenders;
+        me->GetCreatureListWithOptionsInGrid(mindbenders, 200.0f, { .CreatureId = NPC_ANCIENT_MINDBENDER });
+        for (Creature* mindbender : mindbenders)
+            mindbender->DespawnOrUnsummon();
+    }
+
+    void EnterEvadeMode(EvadeReason /*why*/) override
+    {
+        instance->SendEncounterUnit(ENCOUNTER_FRAME_DISENGAGE, me);
+        instance->SetBossState(DATA_LORD_STORMSONG, FAIL);
+
+        _EnterEvadeMode();
+        _DespawnAtEvade();
+
+        instance->DoRemoveAurasDueToSpellOnPlayers(SPELL_ANCIENT_MINDBENDER);
+        instance->DoRemoveAurasDueToSpellOnPlayers(SPELL_DISCIPLE_OF_THE_VOL_ZITH);
+        DespawnMindbenders();
+    }
+
+    void JustEngagedWith(Unit* who) override
+    {
+        BossAI::JustEngagedWith(who);
+        instance->SendEncounterUnit(ENCOUNTER_FRAME_ENGAGE, me, 1);
+        instance->SetBossState(DATA_LORD_STORMSONG, IN_PROGRESS);
+
+        DoCastSelf(SPELL_ENERGIZE);
+
+        events.ScheduleEvent(EVENT_VOID_BOLT, 8500ms);
+        events.ScheduleEvent(EVENT_WAKEN_THE_VOID, 13500ms);
+        events.ScheduleEvent(EVENT_CHECK_POWER, 500ms);
+
+        if (IsHeroicOrHigher())
+            events.ScheduleEvent(EVENT_MIND_REND, 16s);
+    }
+
+    void DoAction(int32 actionId) override
+    {
+        switch (actionId)
+        {
+            case ACTION_START_INTRO:
+            {
+                DoCastSelf(SPELL_CONVERSATION);
+                me->SetEmoteState(EMOTE_ONESHOT_NONE);
+                me->GetMap()->SummonCreature(instance->instance->GetTeamInInstance() == HORDE ? NPC_LORD_STORMSONG_REXXAR : NPC_LORD_STORMSONG_BROTHER_PIKE, IntroPosition);
+
+                scheduler.Schedule(11s, [this](TaskContext task)
+                {
+                    me->SetFacingTo(1.047197f);
+                    me->SetOrientation(me->GetOrientation());
+                    Creature* azshara = me->FindNearestCreature(NPC_QUEEN_AZSHARA, 50.0f);
+                    if (!azshara)
+                        return;
+
+                    azshara->DespawnOrUnsummon();
+
+                    task.Schedule(16s, [this](TaskContext task)
+                    {
+                        DoCastSelf(SPELL_DARK_BINDING);
+
+                        task.Schedule(6s, [this](TaskContext)
+                        {
+                            me->SetImmuneToPC(false);
+                            me->SetEmoteState(EMOTE_STATE_READY1H);
+                            instance->SetData(DATA_LORD_STORMSONG_INTRO, DONE);
+                        });
+                    });
+                });
+                break;
+            }
+            default:
+                break;
+        }
+    }
+
+    void SpellHitTarget(WorldObject* target, SpellInfo const* spellInfo) override
+    {
+        if (!target->IsPlayer())
+            return;
+
+        if (spellInfo->Id == SPELL_ANCIENT_MINDBENDER)
+            Talk(SAY_MINDBENDER_WARNING, target);
+    }
+
+    void JustDied(Unit* /*killer*/) override
+    {
+        _JustDied();
+        instance->SendEncounterUnit(ENCOUNTER_FRAME_DISENGAGE, me);
+        instance->SetBossState(DATA_LORD_STORMSONG, DONE);
+
+        instance->DoRemoveAurasDueToSpellOnPlayers(SPELL_ANCIENT_MINDBENDER);
+        instance->DoRemoveAurasDueToSpellOnPlayers(SPELL_DISCIPLE_OF_THE_VOL_ZITH);
+
+        DespawnMindbenders();
+
+        Creature* pikeOrRexxar = me->GetInstanceScript()->GetCreature(instance->instance->GetTeamInInstance() == HORDE ? DATA_LORD_STORMSONG_REXXAR : DATA_LORD_STORMSONG_BROTHER_PIKE);
+        if (!pikeOrRexxar)
+            return;
+
+        pikeOrRexxar->AI()->DoAction(ACTION_START_OUTRO);
+    }
+
+    void UpdateAI(uint32 diff) override
+    {
+        scheduler.Update(diff);
+
+        if (!UpdateVictim())
+            return;
+
+        events.Update(diff);
+
+        if (me->HasUnitState(UNIT_STATE_CASTING))
+            return;
+
+        while (uint32 eventId = events.ExecuteEvent())
+        {
+            switch (eventId)
+            {
+                case EVENT_VOID_BOLT:
+                {
+                    DoCastVictim(SPELL_VOID_BOLT);
+                    events.Repeat(8500ms);
+                    break;
+                }
+                case EVENT_MIND_REND:
+                {
+                    DoCastSelf(SPELL_MIND_REND);
+                    events.Repeat(10500ms);
+                    break;
+                }
+                case EVENT_WAKEN_THE_VOID:
+                {
+                    DoCastSelf(SPELL_WAKEN_THE_VOID_AREA);
+                    events.Repeat(43500ms);
+                    break;
+                }
+                case EVENT_CHECK_POWER:
+                {
+                    if (me->GetPower(POWER_ENERGY) >= 100)
+                    {
+                         DoCast(SPELL_ANCIENT_MINDBENDER);
+                         events.RescheduleEvent(EVENT_CHECK_POWER, 2s);
+                    }
+                    events.Repeat(500ms);
+                    break;
+                }
+                default:
+                    break;
+            }
+
+            if (me->HasUnitState(UNIT_STATE_CASTING))
+                return;
+        }
+    }
+};
+
+// 137051 - Ancient Mindbender
+struct boss_lord_stormsong_ancient_mindbender : public ScriptedAI
+{
+    boss_lord_stormsong_ancient_mindbender(Creature* creature) : ScriptedAI(creature) { }
+
+    void JustAppeared() override
+    {
+        TempSummon* tempSummon = me->ToTempSummon();
+        if (!tempSummon)
+            return;
+
+        tempSummon->CastSpell(tempSummon->GetSummoner(), SPELL_RIDE_VEHICLE, TRIGGERED_FULL_MASK);
+    }
+};
+
+// 139971 - Rexxar
+// 139970 - Brother Pike
+template<uint32 ConvoIntroSpellId, uint32 ConvoOutroSpellId>
+struct boss_lord_stormsong_intro_npc : public ScriptedAI
+{
+    boss_lord_stormsong_intro_npc(Creature* creature) : ScriptedAI(creature) { }
+
+    void JustAppeared() override
+    {
+        me->GetMotionMaster()->MovePath(PATH_INTRO, false);
+    }
+
+    void WaypointReached(uint32 waypointId, uint32 pathId) override
+    {
+        if (pathId == PATH_INTRO)
+        {
+            if (waypointId == WAYPOINT_BOSS_INTRO)
+                DoCastSelf(ConvoIntroSpellId);
+        }
+        else if (pathId == PATH_OUTRO)
+        {
+            if (waypointId == WAYPOINT_BOSS_OUTRO)
+                DoCastSelf(ConvoOutroSpellId);
+        }
+    }
+
+    void DoAction(int32 action) override
+    {
+        if (action != ACTION_START_OUTRO)
+            return;
+
+        Creature* stalker = me->FindNearestCreature(NPC_WATER_STALKER, 100.0f);
+        if (!stalker)
+            return;
+
+        stalker->CastSpell(stalker, SPELL_RELEASE_VOID, TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR);
+
+        _events.ScheduleEvent(EVENT_OUTRO, 2s);
+    }
+
+    void UpdateAI(uint32 diff) override
+    {
+        _events.Update(diff);
+
+        if (me->HasUnitState(UNIT_STATE_CASTING))
+            return;
+
+        switch (_events.ExecuteEvent())
+        {
+            case EVENT_OUTRO:
+            {
+                me->RemoveAurasDueToSpell(SPELL_DARK_BINDING);
+                me->GetMotionMaster()->MovePath(PATH_OUTRO, false);
+                break;
+            }
+            default:
+                break;
+        }
+    }
+
+private:
+    EventMap _events;
+};
+
+// 269396 - Lord Stormsong Gain Energy (SERVERSIDE)
+class spell_lord_stormsong_energize : public AuraScript
+{
+    static constexpr std::array<uint8, 2> LordStormsongEnergizeCycle = { 2, 3 };
+
+    void PeriodicTick(AuraEffect const* aurEff) const
+    {
+        uint8 cycleIdx = aurEff->GetTickNumber() % LordStormsongEnergizeCycle.size();
+        GetTarget()->ModifyPower(POWER_ENERGY, LordStormsongEnergizeCycle[cycleIdx]);
+    }
+
+    void Register() override
+    {
+        OnEffectPeriodic += AuraEffectPeriodicFn(spell_lord_stormsong_energize::PeriodicTick, EFFECT_0, SPELL_AURA_PERIODIC_DUMMY);
+    }
+};
+
+// 269021 - Waken the Void
+class spell_lord_stormsong_waken_the_void_missile : public SpellScript
+{
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo({ SPELL_WAKEN_THE_VOID_AREATRIGGER, SPELL_FIXATE });
+    }
+
+    void HandleHitTarget(SpellEffIndex /*effIndex*/) const
+    {
+        Unit* caster = GetCaster();
+        caster->CastSpell(GetHitUnit(), SPELL_WAKEN_THE_VOID_AREATRIGGER, TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR);
+        caster->CastSpell(caster, SPELL_FIXATE, TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR);
+    }
+
+    void Register() override
+    {
+        OnEffectHitTarget += SpellEffectFn(spell_lord_stormsong_waken_the_void_missile::HandleHitTarget, EFFECT_0, SPELL_EFFECT_DUMMY);
+    }
+};
+
+// 269103 - Fixate
+class spell_lord_stormsong_fixate : public SpellScript
+{
+    void HandleFixate(SpellEffIndex /*effIndex*/) const
+    {
+        Creature* caster = GetCaster()->ToCreature();
+        if (!caster)
+            return;
+
+        caster->GetMotionMaster()->MoveFollow(GetHitUnit(), 0.0f);
+    }
+
+    void Register() override
+    {
+        OnEffectHitTarget += SpellEffectFn(spell_lord_stormsong_fixate::HandleFixate, EFFECT_0, SPELL_EFFECT_APPLY_AURA);
+    }
+};
+
+class spell_lord_stormsong_fixate_aura : public AuraScript
+{
+    void AfterRemove(AuraEffect const* /*aurEff*/, AuraEffectHandleModes /*mode*/) const
+    {
+        Creature* caster = GetCaster()->ToCreature();
+        if (!caster)
+            return;
+
+        caster->DespawnOrUnsummon();
+    }
+
+    void Register() override
+    {
+        AfterEffectRemove += AuraEffectRemoveFn(spell_lord_stormsong_fixate_aura::AfterRemove, EFFECT_0, SPELL_AURA_MOD_FIXATE, AURA_EFFECT_HANDLE_REAL);
+    }
+};
+
+// 269131 - Ancient Mindbender
+class spell_lord_stormsong_ancient_mindbender : public SpellScript
+{
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo({ SPELL_SURRENDER_TO_THE_VOID });
+    }
+
+    void HandleHit(SpellEffIndex /*effIndex*/) const
+    {
+        Unit* target = GetHitUnit();
+        target->SummonCreature(NPC_ANCIENT_MINDBENDER, target->GetPosition(), TEMPSUMMON_MANUAL_DESPAWN);
+        target->CastSpell(target, SPELL_SURRENDER_TO_THE_VOID, TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR);
+    }
+
+    void Register() override
+    {
+        OnEffectHitTarget += SpellEffectFn(spell_lord_stormsong_ancient_mindbender::HandleHit, EFFECT_11, SPELL_EFFECT_SCRIPT_EFFECT);
+    }
+};
+
+class spell_lord_stormsong_ancient_mindbender_aura : public AuraScript
+{
+    void OnRemove(AuraEffect const* /*aurEff*/, AuraEffectHandleModes /*mode*/) const
+    {
+        Vehicle* playerVehicle = GetTarget()->GetVehicleKit();
+        if (!playerVehicle)
+            return;
+
+        Unit* ancientMindbender = playerVehicle->GetPassenger(0);
+        if (!ancientMindbender)
+            return;
+
+        Creature* mindbender = ancientMindbender->ToCreature();
+        if (!mindbender)
+            return;
+
+        mindbender->DespawnOrUnsummon();
+    }
+
+    void Register() override
+    {
+        OnEffectRemove += AuraEffectRemoveFn(spell_lord_stormsong_ancient_mindbender_aura::OnRemove, EFFECT_2, SPELL_AURA_SET_VEHICLE_ID, AURA_EFFECT_HANDLE_REAL);
+    }
+};
+
+// 269242 - Surrender to the Void
+class spell_lord_stormsong_surrender_to_the_void : public SpellScript
+{
+    bool Validate(SpellInfo const* spellInfo) override
+    {
+        return ValidateSpellInfo({ static_cast<uint32>(spellInfo->GetEffect(EFFECT_0).CalcValue()) });
+    }
+
+    void HandleDummy(SpellEffIndex /* effIndex */) const
+    {
+        GetHitUnit()->m_Events.AddEvent([hitUnit = GetHitUnit(), casterGUID = GetCaster()->GetGUID(), spellId = GetEffectValue()]()
+        {
+            if (Unit* caster = ObjectAccessor::GetUnit(*hitUnit, casterGUID))
+                hitUnit->CastSpell(caster, uint32(spellId), TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR);
+        }, 0ms);
+    }
+
+    void Register() override
+    {
+        OnEffectHitTarget += SpellEffectFn(spell_lord_stormsong_surrender_to_the_void::HandleDummy, EFFECT_0, SPELL_EFFECT_SCRIPT_EFFECT);
+    }
+};
+
+// 269289 - Disciple of the Vol'zith
+class spell_lord_stormsong_disciple_of_the_vol_zith : public AuraScript
+{
+    bool Validate(SpellInfo const* spellInfo) override
+    {
+        return ValidateSpellInfo({ static_cast<uint32>(spellInfo->GetEffect(EFFECT_0).CalcValue()) });
+    }
+
+    void HandlePeriodic(AuraEffect const* /*aurEff*/) const
+    {
+        Unit* target = GetTarget();
+        target->CastSpell(target, GetEffectInfo(EFFECT_0).CalcValue(), TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR);
+    }
+
+    void Register() override
+    {
+        OnEffectPeriodic += AuraEffectPeriodicFn(spell_lord_stormsong_disciple_of_the_vol_zith::HandlePeriodic, EFFECT_0, SPELL_AURA_PERIODIC_DUMMY);
+    }
+};
+
+// 274711 - Release Void
+class spell_lord_stormsong_release_void : public AuraScript
+{
+    void OnRemove(AuraEffect const* /*auraEffect*/, AuraEffectHandleModes /*mode*/) const
+    {
+        if (Creature* creatureCaster = GetCaster()->ToCreature())
+            creatureCaster->DespawnOrUnsummon();
+    }
+
+    void Register() override
+    {
+        AfterEffectRemove += AuraEffectRemoveFn(spell_lord_stormsong_release_void::OnRemove, EFFECT_0, SPELL_AURA_PERIODIC_TRIGGER_SPELL, AURA_EFFECT_HANDLE_REAL);
+    }
+};
+
+// 274710 - Release Void
+class spell_lord_stormsong_release_void_missile : public SpellScript
+{
+    void ModDestHeight(SpellDestination& dest) const
+    {
+        Position const offset = { 0.0f, 0.0f, 20.0f, 0.0f };
+        dest.RelocateOffset(offset);
+    }
+
+    void Register() override
+    {
+        OnDestinationTargetSelect += SpellDestinationTargetSelectFn(spell_lord_stormsong_release_void_missile::ModDestHeight, EFFECT_1, TARGET_DEST_DEST_RANDOM);
+    }
+};
+
+// 269094 - Waken the Void
+struct at_lord_stormsong_waken_the_void : AreaTriggerAI
+{
+    using AreaTriggerAI::AreaTriggerAI;
+
+    void OnUnitEnter(Unit* unit) override
+    {
+        if (!unit->IsPlayer())
+            return;
+
+        Unit* caster = at->GetCaster();
+        if (!caster)
+            return;
+
+        caster->CastSpell(unit, SPELL_EXPLOSIVE_VOID, TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR);
+        unit->RemoveAurasDueToSpell(SPELL_FIXATE);
+        at->Remove();
+    }
+};
+
+// Id - XXX
+struct at_lord_stormsong_intro : AreaTriggerAI
+{
+    at_lord_stormsong_intro(AreaTrigger* areatrigger) : AreaTriggerAI(areatrigger) { }
+
+    void OnUnitEnter(Unit* unit) override
+    {
+        Player* player = unit->ToPlayer();
+        if (!player || player->IsGameMaster())
+            return;
+
+        InstanceScript* instance = at->GetInstanceScript();
+        if (!instance)
+            return;
+
+        if (Creature* lordStormsong = instance->GetCreature(DATA_LORD_STORMSONG))
+            lordStormsong->AI()->DoAction(ACTION_START_INTRO);
+
+        at->Remove();
+    }
+};
+
+// 274640 - Conversation
+// 274674 - Conversation
+class conversation_lord_stormsong_brother_pike_intro_outro : public ConversationAI
+{
+public:
+    conversation_lord_stormsong_brother_pike_intro_outro(Conversation* conversation) : ConversationAI(conversation) { }
+
+    void OnCreate(Unit* creator) override
+    {
+        conversation->AddActor(CONVO_ACTOR_BROTHER_PIKE, 0, creator->GetGUID());
+    }
+};
+
+// 274641 - Conversation
+class conversation_lord_stormsong_rexxar_intro : public ConversationAI
+{
+public:
+    conversation_lord_stormsong_rexxar_intro(Conversation* conversation) : ConversationAI(conversation) { }
+
+    void OnCreate(Unit* creator) override
+    {
+        conversation->AddActor(CONVO_ACTOR_REXXAR, 1, creator->GetGUID());
+    }
+};
+
+// 274675 - Conversation
+class conversation_lord_stormsong_rexxar_outro : public ConversationAI
+{
+public:
+    conversation_lord_stormsong_rexxar_outro(Conversation* conversation) : ConversationAI(conversation) { }
+
+    void OnCreate(Unit* creator) override
+    {
+        conversation->AddActor(CONVO_ACTOR_REXXAR, 0, creator->GetGUID());
+    }
+};
+
+void AddSC_boss_lord_stormsong()
+{
+    RegisterShrineOfTheStormCreatureAI(boss_lord_stormsong);
+    RegisterShrineOfTheStormCreatureAI(boss_lord_stormsong_ancient_mindbender);
+    new GenericCreatureScript<boss_lord_stormsong_intro_npc<SPELL_CONVERSATION_HORDE_INTRO, SPELL_CONVERSATION_HORDE_OUTRO>>("boss_lord_stormsong_rexxar");
+    new GenericCreatureScript<boss_lord_stormsong_intro_npc<SPELL_CONVERSATION_ALLIANCE_INTRO, SPELL_CONVERSATION_ALLIANCE_OUTRO>>("boss_lord_stormsong_brother_pike");
+
+    RegisterSpellScript(spell_lord_stormsong_energize);
+    RegisterSpellScript(spell_lord_stormsong_waken_the_void_missile);
+    RegisterSpellAndAuraScriptPair(spell_lord_stormsong_fixate, spell_lord_stormsong_fixate_aura);
+    RegisterSpellAndAuraScriptPair(spell_lord_stormsong_ancient_mindbender, spell_lord_stormsong_ancient_mindbender_aura);
+    RegisterSpellScript(spell_lord_stormsong_surrender_to_the_void);
+    RegisterSpellScript(spell_lord_stormsong_disciple_of_the_vol_zith);
+    RegisterSpellScript(spell_lord_stormsong_release_void);
+    RegisterSpellScript(spell_lord_stormsong_release_void_missile);
+
+    RegisterAreaTriggerAI(at_lord_stormsong_waken_the_void);
+
+    RegisterAreaTriggerAI(at_lord_stormsong_intro);
+
+    RegisterConversationAI(conversation_lord_stormsong_brother_pike_intro_outro);
+    RegisterConversationAI(conversation_lord_stormsong_rexxar_intro);
+    RegisterConversationAI(conversation_lord_stormsong_rexxar_outro);
+}
diff --git a/src/server/scripts/KulTiras/ShrineOfTheStorm/instance_shrine_of_the_storm.cpp b/src/server/scripts/KulTiras/ShrineOfTheStorm/instance_shrine_of_the_storm.cpp
index d384ae6a85e..57c6ceba654 100644
--- a/src/server/scripts/KulTiras/ShrineOfTheStorm/instance_shrine_of_the_storm.cpp
+++ b/src/server/scripts/KulTiras/ShrineOfTheStorm/instance_shrine_of_the_storm.cpp
@@ -23,17 +23,20 @@
 static BossBoundaryData const boundaries =
 {
     { DATA_AQUSIRR, new ZRangeBoundary(119.89f, 132.9f) },
-    { DATA_TIDESAGE_COUNCIL, new CircleBoundary({ 3939.6357f, -1007.4829f, 109.2227f }, 60.0f)}
+    { DATA_TIDESAGE_COUNCIL, new CircleBoundary({ 3939.6357f, -1007.4829f, 109.2227f }, 60.0f) },
+    { DATA_LORD_STORMSONG, new ZRangeBoundary(146.85f, 157.03f) }
 };
 
 ObjectData const creatureData[] =
 {
-    { BOSS_AQUSIRR,               DATA_AQUSIRR               },
-    { BOSS_BROTHER_IRONHULL,      DATA_BROTHER_IRONHULL      },
-    { BOSS_GALECALLER_FAYE,       DATA_GALECALLER_FAYE       },
-    { BOSS_LORD_STORMSONG,        DATA_LORD_STORMSONG        },
-    { BOSS_VOLZITH_THE_WHISPERER, DATA_VOLZITH_THE_WHISPERER },
-    { 0,                          0                          }  // END
+    { BOSS_AQUSIRR,                    DATA_AQUSIRR                     },
+    { BOSS_BROTHER_IRONHULL,           DATA_BROTHER_IRONHULL            },
+    { BOSS_GALECALLER_FAYE,            DATA_GALECALLER_FAYE             },
+    { BOSS_LORD_STORMSONG,             DATA_LORD_STORMSONG              },
+    { BOSS_VOLZITH_THE_WHISPERER,      DATA_VOLZITH_THE_WHISPERER       },
+    { NPC_LORD_STORMSONG_BROTHER_PIKE, DATA_LORD_STORMSONG_BROTHER_PIKE },
+    { NPC_LORD_STORMSONG_REXXAR,       DATA_LORD_STORMSONG_REXXAR       },
+    { 0,                               0                                }  // END
 };
 
 DungeonEncounterData const encounters[] =
@@ -58,7 +61,36 @@ public:
             LoadBossBoundaries(boundaries);
             LoadObjectData(creatureData, nullptr);
             LoadDungeonEncounterData(encounters);
+
+            _lordStormsongIntroState = NOT_STARTED;
+        }
+
+        uint32 GetData(uint32 dataId) const override
+        {
+            switch (dataId)
+            {
+                case DATA_LORD_STORMSONG_INTRO:
+                    return _lordStormsongIntroState;
+                default:
+                    break;
+            }
+            return 0;
         }
+
+        void SetData(uint32 dataId, uint32 value) override
+        {
+            switch (dataId)
+            {
+                case DATA_LORD_STORMSONG_INTRO:
+                    _lordStormsongIntroState = value;
+                    break;
+                default:
+                    break;
+            }
+        }
+
+    private:
+        uint8 _lordStormsongIntroState;
     };
 
     InstanceScript* GetInstanceScript(InstanceMap* map) const override
diff --git a/src/server/scripts/KulTiras/ShrineOfTheStorm/shrine_of_the_storm.h b/src/server/scripts/KulTiras/ShrineOfTheStorm/shrine_of_the_storm.h
index e8d9b7f4e73..a3309dd0932 100644
--- a/src/server/scripts/KulTiras/ShrineOfTheStorm/shrine_of_the_storm.h
+++ b/src/server/scripts/KulTiras/ShrineOfTheStorm/shrine_of_the_storm.h
@@ -34,7 +34,11 @@ enum ShrineOfTheStormDataTypes
     DATA_VOLZITH_THE_WHISPERER  = 3,
 
     DATA_BROTHER_IRONHULL,
-    DATA_GALECALLER_FAYE
+    DATA_GALECALLER_FAYE,
+
+    DATA_LORD_STORMSONG_INTRO,
+    DATA_LORD_STORMSONG_BROTHER_PIKE,
+    DATA_LORD_STORMSONG_REXXAR
 };
 
 enum ShrineOfTheStormCreatureIds
@@ -50,6 +54,9 @@ enum ShrineOfTheStormCreatureIds
     NPC_SHRINE_OF_THE_STORM_DUMMY   = 139986,
     NPC_GRASPING_TENTACLE           = 134612,
     NPC_AQUALING                    = 134828,
+
+    NPC_LORD_STORMSONG_BROTHER_PIKE = 139970,
+    NPC_LORD_STORMSONG_REXXAR       = 139971
 };
 
 template <class AI, class T>
diff --git a/src/server/scripts/KulTiras/kultiras_script_loader.cpp b/src/server/scripts/KulTiras/kultiras_script_loader.cpp
index 3934b6cebe0..68057631500 100644
--- a/src/server/scripts/KulTiras/kultiras_script_loader.cpp
+++ b/src/server/scripts/KulTiras/kultiras_script_loader.cpp
@@ -28,6 +28,7 @@ void AddSC_drustvar_chapter_3_an_airtight_alibi();
 // Shrine of the Storm
 void AddSC_boss_aqusirr();
 void AddSC_boss_tidesage_council();
+void AddSC_boss_lord_stormsong();
 void AddSC_instance_shrine_of_the_storm();
 
 // Waycrest Manor
@@ -52,6 +53,7 @@ void AddKulTirasScripts()
     // Shrine of the Storm
     AddSC_boss_aqusirr();
     AddSC_boss_tidesage_council();
+    AddSC_boss_lord_stormsong();
     AddSC_instance_shrine_of_the_storm();
 
     // Waycrest Manor