1 files changed, 69 insertions, 0 deletions
diff --git a/src/server/scripts/Spells/spell_priest.cpp b/src/server/scripts/Spells/spell_priest.cpp
index d7b09aab997..28e23a8ddcb 100644
--- a/src/server/scripts/Spells/spell_priest.cpp
+++ b/src/server/scripts/Spells/spell_priest.cpp
@@ -193,6 +193,8 @@ enum PriestSpells
     SPELL_PRIEST_TRAIL_OF_LIGHT_HEAL                = 234946,
     SPELL_PRIEST_TRINITY                            = 214205,
     SPELL_PRIEST_TRINITY_EFFECT                     = 290793,
+    SPELL_PRIEST_TWILIGHT_EQUILIBRIUM_HOLY          = 390706,
+    SPELL_PRIEST_TWILIGHT_EQUILIBRIUM_SHADOW        = 390707,
     SPELL_PRIEST_ULTIMATE_PENITENCE                 = 421453,
     SPELL_PRIEST_ULTIMATE_PENITENCE_DAMAGE          = 421543,
     SPELL_PRIEST_ULTIMATE_PENITENCE_HEAL            = 421544,
@@ -3298,6 +3300,71 @@ class spell_pri_train_of_thought : public AuraScript
     }
 };
 
+// 390705 - Twilight Equilibrium
+class spell_pri_twilight_equilibrium : public AuraScript
+{
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo({ SPELL_PRIEST_TWILIGHT_EQUILIBRIUM_HOLY, SPELL_PRIEST_TWILIGHT_EQUILIBRIUM_SHADOW });
+    }
+
+    void HandleProc(ProcEventInfo const& eventInfo) const
+    {
+        uint32 spellId = 0;
+
+        if (eventInfo.GetDamageInfo()->GetSchoolMask() & SPELL_SCHOOL_MASK_SHADOW)
+            spellId = SPELL_PRIEST_TWILIGHT_EQUILIBRIUM_HOLY;
+        else if (eventInfo.GetDamageInfo()->GetSchoolMask() & SPELL_SCHOOL_MASK_HOLY)
+            spellId = SPELL_PRIEST_TWILIGHT_EQUILIBRIUM_SHADOW;
+        else
+            return;
+
+        Unit* caster = GetTarget();
+        caster->CastSpell(caster, spellId, TRIGGERED_IGNORE_CAST_IN_PROGRESS | TRIGGERED_DONT_REPORT_CAST_ERROR);
+    }
+
+    void Register() override
+    {
+        OnProc += AuraProcFn(spell_pri_twilight_equilibrium::HandleProc);
+    }
+};
+
+// ID - 390707 Twilight Equilibrium (attached to 589 - Shadow Word: Pain)
+class spell_pri_twilight_equilibrium_shadow_word_pain : public AuraScript
+{
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo({ SPELL_PRIEST_TWILIGHT_EQUILIBRIUM_SHADOW });
+    }
+
+    void OnApply(AuraEffect const* /*aurEff*/, int32& /*amount*/, bool& /*canBeRecalculated*/)
+    {
+        _damageMultiplier = 1.0f;
+        if (Unit* caster = GetCaster())
+        {
+            if (AuraEffect* twilightEquilibrium = caster->GetAuraEffect(SPELL_PRIEST_TWILIGHT_EQUILIBRIUM_SHADOW, EFFECT_0))
+            {
+                // snapshot Twilight Equilibrium value
+                AddPct(_damageMultiplier, twilightEquilibrium->GetAmount());
+                twilightEquilibrium->GetBase()->Remove();
+            }
+        }
+    }
+
+    void CalcDamage(AuraEffect const* /*aurEff*/, Unit* /*victim*/, int32& /*damageOrHealing*/, int32& /*flatMod*/, float& pctMod) const
+    {
+        pctMod *= _damageMultiplier;
+    }
+
+    void Register() override
+    {
+        DoEffectCalcAmount += AuraEffectCalcAmountFn(spell_pri_twilight_equilibrium_shadow_word_pain::OnApply, EFFECT_1, SPELL_AURA_PERIODIC_DAMAGE);
+        DoEffectCalcDamageAndHealing += AuraEffectCalcDamageFn(spell_pri_twilight_equilibrium_shadow_word_pain::CalcDamage, EFFECT_1, SPELL_AURA_PERIODIC_DAMAGE);
+    }
+
+    float _damageMultiplier = 1.0f;
+};
+
 // 109142 - Twist of Fate (Shadow)
 // 265259 - Twist of Fate (Discipline)
 class spell_pri_twist_of_fate : public AuraScript
@@ -3602,6 +3669,8 @@ void AddSC_priest_spell_scripts()
     RegisterSpellScript(spell_pri_t3_4p_bonus);
     RegisterSpellScript(spell_pri_t5_heal_2p_bonus);
     RegisterSpellScript(spell_pri_t10_heal_2p_bonus);
+    RegisterSpellScript(spell_pri_twilight_equilibrium);
+    RegisterSpellScript(spell_pri_twilight_equilibrium_shadow_word_pain);
     RegisterSpellScript(spell_pri_twist_of_fate);
     RegisterSpellScript(spell_pri_unfurling_darkness);
     RegisterSpellScript(spell_pri_vampiric_embrace);