diff --git a/sql/updates/world/4.3.4/2022_02_22_00_world.sql b/sql/updates/world/4.3.4/2022_02_22_00_world.sql
new file mode 100644
index 0000000000..ef4cda065d
--- /dev/null
+++ b/sql/updates/world/4.3.4/2022_02_22_00_world.sql
@@ -0,0 +1,3 @@
+DELETE FROM `spell_script_names` WHERE `ScriptName`= 'spell_pri_devouring_plague';
+INSERT INTO `spell_script_names` (`spell_id`, `ScriptName`) VALUES
+(2944, 'spell_pri_devouring_plague');
diff --git a/src/server/game/Spells/Auras/SpellAuras.cpp b/src/server/game/Spells/Auras/SpellAuras.cpp
index 76df7a9939..091f5c1805 100644
--- a/src/server/game/Spells/Auras/SpellAuras.cpp
+++ b/src/server/game/Spells/Auras/SpellAuras.cpp
@@ -1320,30 +1320,6 @@ void Aura::HandleAuraSpecificMods(AuraApplication const* aurApp, Unit* caster, b
                 if (!caster)
                     break;
 
-                // Devouring Plague
-                if (GetSpellInfo()->SpellFamilyFlags[0] & 0x02000000)
-                {
-                    AuraEffect const* devouringPlague = GetEffect(EFFECT_0);
-                    if (!devouringPlague)
-                        break;
-
-                    // Improved Devouring Plague
-                    if (AuraEffect const* aurEff = caster->GetDummyAuraEffect(SPELLFAMILY_PRIEST, 3790, 0))
-                    {
-                        int32 damage = (devouringPlague->GetAmount() + devouringPlague->GetBonusAmount()) * devouringPlague->GetDonePct();
-                        if (Player* modOwner = caster->GetSpellModOwner())
-                            modOwner->ApplySpellMod(GetSpellInfo()->Id, SPELLMOD_DOT, damage);
-
-                        damage = target->SpellDamageBonusTaken(caster, GetSpellInfo(), damage, DOT);
-
-                        CastSpellExtraArgs args(devouringPlague), args2(devouringPlague);
-                        int32 basepoints0 = CalculatePct(devouringPlague->GetTotalTicks() * static_cast<int32>(damage), aurEff->GetAmount());
-                        args.SpellValueOverrides.AddMod(SPELLVALUE_BASE_POINT0, basepoints0);
-                        args2.SpellValueOverrides.AddMod(SPELLVALUE_BASE_POINT0, CalculatePct(basepoints0, 15));
-                        caster->CastSpell(target, 63675, args);
-                        caster->CastSpell(nullptr, 75999, args2);
-                    }
-                }
                 // Power Word: Shield
                 else if (m_spellInfo->SpellFamilyFlags[0] & 0x1 && m_spellInfo->SpellFamilyFlags[2] & 0x400 && GetEffect(0))
                 {
diff --git a/src/server/game/Spells/SpellMgr.cpp b/src/server/game/Spells/SpellMgr.cpp
index ceeb2492fb..94243cedea 100644
--- a/src/server/game/Spells/SpellMgr.cpp
+++ b/src/server/game/Spells/SpellMgr.cpp
@@ -3323,7 +3323,7 @@ void SpellMgr::LoadSpellInfoCorrections()
     // Improved Devouring Plague
     ApplySpellFix({ 63675 }, [](SpellInfo* spellInfo)
     {
-        spellInfo->AttributesEx3 |= SPELL_ATTR3_NO_DONE_BONUS;
+        spellInfo->AttributesEx6 |= SPELL_ATTR6_LIMIT_PCT_DAMAGE_MODS;
     });
 
     // Tremor Totem (instant pulse)
diff --git a/src/server/scripts/Spells/spell_priest.cpp b/src/server/scripts/Spells/spell_priest.cpp
index 88572b22fb..b1eec54e35 100644
--- a/src/server/scripts/Spells/spell_priest.cpp
+++ b/src/server/scripts/Spells/spell_priest.cpp
@@ -71,6 +71,7 @@ enum PriestSpells
     SPELL_PRIEST_GUARDIAN_SPIRIT_HEAL               = 48153,
     SPELL_PRIEST_HOLY_WORD_CHASTISE                 = 88625,
     SPELL_PRIEST_HOLY_WORD_SANCTUARY                = 88686,
+    SPELL_PRIEST_IMPROVED_DEVOURING_PLAGUE_DAMAGE   = 63675,
     SPELL_PRIEST_INDULGENCE_OF_THE_PENITENT         = 89913,
     SPELL_PRIEST_INNER_FOCUS                        = 89485,
     SPELL_PRIEST_ITEM_EFFICIENCY                    = 37595,
@@ -116,7 +117,8 @@ enum PriestSpellIcons
     PRIEST_ICON_ID_IMPROVED_MIND_BLAST              = 95,
     PRIEST_ICON_ID_MIND_MELT                        = 3139,
     PRIEST_ICON_ID_SHADOW_ORB                       = 4941,
-    PRIEST_ICON_ID_GLYPH_OF_SHADOW_WORD_DEATH       = 1980
+    PRIEST_ICON_ID_GLYPH_OF_SHADOW_WORD_DEATH       = 1980,
+    PRIEST_ICON_ID_IMPROVED_DEVOURING_PLAGUE        = 3790
 };
 
 enum MiscSpells
@@ -1782,6 +1784,34 @@ class spell_pri_harnessed_shadows : public AuraScript
     }
 };
 
+// 2944 - Devouring Plague 
+class spell_pri_devouring_plague : public AuraScript
+{
+    bool Validate(SpellInfo const* /*spellInfo*/) override
+    {
+        return ValidateSpellInfo({ SPELL_PRIEST_IMPROVED_DEVOURING_PLAGUE_DAMAGE });
+    }
+
+    void AfterApply(AuraEffect const* aurEff, AuraEffectHandleModes /*mode*/)
+    {
+        Unit* caster = GetCaster();
+        if (!caster)
+            return;
+
+        // Improved Devouring Plague
+        if (AuraEffect const* improvedDevouringPlague = caster->GetDummyAuraEffect(SPELLFAMILY_PRIEST, PRIEST_ICON_ID_IMPROVED_DEVOURING_PLAGUE, EFFECT_0))
+        {
+            int32 bp = CalculatePct(aurEff->GetAmount() * aurEff->GetTotalTicks(), improvedDevouringPlague->GetAmount());
+            caster->CastSpell(GetTarget(), SPELL_PRIEST_IMPROVED_DEVOURING_PLAGUE_DAMAGE, CastSpellExtraArgs(true).AddSpellBP0(bp));
+        }
+    }
+
+    void Register() override
+    {
+        AfterEffectApply.Register(&spell_pri_devouring_plague::AfterApply, EFFECT_0, SPELL_AURA_PERIODIC_LEECH, AURA_EFFECT_HANDLE_REAL_OR_REAPPLY_MASK);
+    }
+};
+
 void AddSC_priest_spell_scripts()
 {
     RegisterSpellScript(spell_pri_archangel);
@@ -1793,6 +1823,7 @@ void AddSC_priest_spell_scripts()
     RegisterSpellScript(spell_pri_chakra_serenity_script);
     RegisterSpellScript(spell_pri_chakra_flow_removal);
     RegisterSpellScript(spell_pri_circle_of_healing);
+    RegisterSpellScript(spell_pri_devouring_plague);
     RegisterSpellScript(spell_pri_dispel_magic);
     RegisterSpellScript(spell_pri_divine_aegis);
     RegisterSpellScript(spell_pri_divine_hymn);