diff --git a/sql/updates/world/custom/custom_2018_08_21_00_world.sql b/sql/updates/world/custom/custom_2018_08_21_00_world.sql
index bab3a185e68..9ce46d762c0 100644
--- a/sql/updates/world/custom/custom_2018_08_21_00_world.sql
+++ b/sql/updates/world/custom/custom_2018_08_21_00_world.sql
@@ -48,7 +48,9 @@ DELETE FROM `spell_script_names` WHERE `ScriptName` IN
 'spell_ozumat_jump_to_ground',
 'spell_ozumat_shadow_blast',
 'spell_ozumat_shadow_blast_missile',
-'spell_ozumat_blight_of_ozumat');
+'spell_ozumat_blight_of_ozumat',
+'spell_ozumat_purify');
+
 INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
 (83240, 'spell_ozumat_charge_to_window'),
 (83241, 'spell_ozumat_jump_to_ground'),
@@ -56,7 +58,8 @@ INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
 (83652, 'spell_ozumat_jump_to_ground'),
 (83929, 'spell_ozumat_shadow_blast'),
 (83931, 'spell_ozumat_shadow_blast_missile'),
-(83518, 'spell_ozumat_blight_of_ozumat');
+(83518, 'spell_ozumat_blight_of_ozumat'),
+(76953, 'spell_ozumat_purify');
 
 -- Gossips
 DELETE FROM `gossip_menu_option` WHERE (`MenuID`=11469 AND `OptionID`=0);
@@ -64,14 +67,16 @@ INSERT INTO `gossip_menu_option` (`MenuID`, `OptionID`, `OptionIcon`, `OptionTex
 (11469, 0, 0, 'We are ready!', 1, 1, 41133);
 
 -- Spellclicks
-DELETE FROM `npc_spellclick_spells` WHERE `npc_entry` IN (44648);
+DELETE FROM `npc_spellclick_spells` WHERE `npc_entry` IN (44648, 49104);
 INSERT INTO `npc_spellclick_spells` (`npc_entry`, `spell_id`, `cast_flags`, `user_type`) VALUES
-(44648, 46598, 1, 1);
+(44648, 46598, 1, 1),
+(49104, 46598, 1, 1);
 
 -- Vehicle Accessories
-DELETE FROM `vehicle_template_accessory` WHERE `entry` IN (44648);
+DELETE FROM `vehicle_template_accessory` WHERE `entry` IN (44648, 49104);
 INSERT INTO `vehicle_template_accessory` (`entry`, `accessory_entry`, `seat_id`, `minion`, `description`, `summontype`, `summontimer`) VALUES
-(44648, 44950, 0, 1, 'Unyielding Behemoth - Hand Visual', 8, 0);
+(44648, 44950, 0, 1, 'Unyielding Behemoth - Hand Visual', 8, 0),
+(49104, 44950, 0, 1, 'Unyielding Behemoth - Hand Visual', 8, 0);
 
 -- Texts
 DELETE FROM `creature_text` WHERE `CreatureID`= 40792;
@@ -120,7 +125,7 @@ INSERT INTO `creature_onkill_reward` (`creature_id`, `CurrencyId1`, `CurrencyCou
 (49097, 395, 7000);
 
 -- Loot
-UPDATE `gameobject_template_addon`SET `flags`= 16,`mingold`= 19800, `maxgold`= 20000 WHERE `entry` IN (205216, 207973);
+UPDATE `gameobject_template_addon`SET `flags`= 16, `mingold`= 19800, `maxgold`= 20000 WHERE `entry` IN (205216, 207973);
 
 DELETE FROM `gameobject_loot_template` WHERE `Entry` IN (29711, 36142);
 DELETE FROM `reference_loot_template` WHERE `Entry` IN (297110, 361420);
diff --git a/src/server/scripts/EasternKingdoms/ThroneOfTheTides/boss_ozumat.cpp b/src/server/scripts/EasternKingdoms/ThroneOfTheTides/boss_ozumat.cpp
index 586f21025b6..f5fe8d7266b 100644
--- a/src/server/scripts/EasternKingdoms/ThroneOfTheTides/boss_ozumat.cpp
+++ b/src/server/scripts/EasternKingdoms/ThroneOfTheTides/boss_ozumat.cpp
@@ -116,6 +116,7 @@ enum Events
     // Vicious Mindlasher
     EVENT_BRAIN_SPIKE,
     EVENT_VEIL_OF_SHADOW,
+    EVENT_SHADOW_BOLT,
 
     // Unyielding Behemoth
     EVENT_BLIGHT_SPRAY,
@@ -599,7 +600,8 @@ struct npc_ozumat_vicious_mindlasher : public ScriptedAI
     void JustEngagedWith(Unit* /*who*/) override
     {
         _events.ScheduleEvent(EVENT_BRAIN_SPIKE, 44s, 45s);
-        _events.ScheduleEvent(SPELL_VEIL_OF_SHADOW, 8s, 9s);
+        _events.ScheduleEvent(EVENT_VEIL_OF_SHADOW, 8s, 9s);
+        _events.ScheduleEvent(EVENT_SHADOW_BOLT, 1ms);
     }
 
     void JustDied(Unit* /*killer*/) override
@@ -625,16 +627,19 @@ struct npc_ozumat_vicious_mindlasher : public ScriptedAI
                 case EVENT_BRAIN_SPIKE:
                     DoCastAOE(SPELL_BRAIN_SPIKE);
                     break;
-                case SPELL_VEIL_OF_SHADOW:
+                case EVENT_VEIL_OF_SHADOW:
                     if (Unit* target = SelectTarget(SELECT_TARGET_RANDOM, 0, 50.0f, true, 0))
                         DoCast(target, SPELL_VEIL_OF_SHADOW);
                     break;
+                case EVENT_SHADOW_BOLT:
+                    if (Unit* target = me->GetVictim())
+                        DoCast(target, SPELL_SHADOW_BOLT);
+                    _events.Repeat(2s + 500ms);
+                    break;
                 default:
                     break;
             }
         }
-
-        DoSpellAttackIfReady(SPELL_SHADOW_BOLT);
     }
 
 private:
@@ -882,6 +887,35 @@ class spell_ozumat_blight_of_ozumat : public SpellScript
     }
 };
 
+class PurifyHeightCheck
+{
+    public:
+        PurifyHeightCheck() { }
+
+        bool operator()(WorldObject* object)
+        {
+            return (object->GetPositionZ() < 265.42f);
+        }
+};
+
+class spell_ozumat_purify : public SpellScript
+{
+    PrepareSpellScript(spell_ozumat_purify);
+
+    void FilterTargets(std::list<WorldObject*>& targets)
+    {
+        if (targets.empty())
+            return;
+
+        targets.remove_if(PurifyHeightCheck());
+    }
+
+    void Register() override
+    {
+        OnObjectAreaTargetSelect += SpellObjectAreaTargetSelectFn(spell_ozumat_purify::FilterTargets, EFFECT_0, TARGET_UNIT_SRC_AREA_ENTRY);
+    }
+};
+
 void AddSC_boss_ozumat()
 {
     RegisterThroneOfTheTidesCreatureAI(boss_ozumat);
@@ -893,4 +927,5 @@ void AddSC_boss_ozumat()
     RegisterSpellAndAuraScriptPair(spell_ozumat_shadow_blast, spell_ozumat_shadow_blast_AuraScript);
     RegisterSpellScript(spell_ozumat_shadow_blast_missile);
     RegisterSpellScript(spell_ozumat_blight_of_ozumat);
+    RegisterSpellScript(spell_ozumat_purify);
 }