diff --git a/sql/updates/world/3.3.5/2016_12_30_02_world_335.sql b/sql/updates/world/3.3.5/2016_12_30_02_world_335.sql
new file mode 100644
index 0000000000..23954b3bee
--- /dev/null
+++ b/sql/updates/world/3.3.5/2016_12_30_02_world_335.sql
@@ -0,0 +1,5 @@
+UPDATE `spell_proc` SET `SpellFamilyMask2`=0, `AttributesMask`=`AttributesMask`|0x2 WHERE `SpellId`=-31571;
+DELETE FROM `spell_proc` WHERE `SpellId` IN (57529, 57531);
+INSERT INTO `spell_proc` (`SpellId`, `SchoolMask`, `SpellFamilyName`, `SpellFamilyMask0`, `SpellFamilyMask1`, `SpellFamilyMask2`, `ProcFlags`, `SpellTypeMask`, `SpellPhaseMask`, `HitMask`, `AttributesMask`, `ProcsPerMinute`, `Chance`, `Cooldown`, `Charges`) VALUES
+(57529, 0, 3, 0x61400035, 0x00001000, 0x00000000, 0, 0x0, 0x1, 0x0, 0x8, 0, 0, 0, 0),
+(57531, 0, 3, 0x61400035, 0x00001000, 0x00000000, 0, 0x0, 0x1, 0x0, 0x8, 0, 0, 0, 0);
diff --git a/src/server/game/Entities/Unit/Unit.cpp b/src/server/game/Entities/Unit/Unit.cpp
index c1b146d7b8..f058c60ee6 100644
--- a/src/server/game/Entities/Unit/Unit.cpp
+++ b/src/server/game/Entities/Unit/Unit.cpp
@@ -7029,7 +7029,34 @@ float Unit::GetUnitSpellCriticalChance(Unit* victim, SpellInfo const* spellProto
                 crit_chance = 0.0f;
             // For other schools
             else if (GetTypeId() == TYPEID_PLAYER)
+            {
                 crit_chance = GetFloatValue(PLAYER_SPELL_CRIT_PERCENTAGE1 + GetFirstSchoolInMask(schoolMask));
+
+                // register aura mod, this is needed for Arcane Potency
+                if (Spell* spell = ToPlayer()->m_spellModTakingSpell)
+                {
+                    std::vector<Aura*> affectingAuras;
+                    (void)GetTotalAuraModifier(SPELL_AURA_MOD_SPELL_CRIT_CHANCE, [&affectingAuras](AuraEffect const* aurEff) -> bool
+                    {
+                        affectingAuras.push_back(aurEff->GetBase());
+                        return true;
+                    });
+
+                    (void)GetTotalAuraModifier(SPELL_AURA_MOD_SPELL_CRIT_CHANCE_SCHOOL, [&affectingAuras, schoolMask](AuraEffect const* aurEff) -> bool
+                    {
+                        if ((aurEff->GetMiscValue() & schoolMask) != 0)
+                        {
+                            affectingAuras.push_back(aurEff->GetBase());
+                            return true;
+                        }
+
+                        return false;
+                    });
+
+                    for (Aura* aura : affectingAuras)
+                        spell->m_appliedMods.insert(aura);
+                }
+            }
             else
             {
                 crit_chance = (float)m_baseSpellCritChance;
diff --git a/src/server/game/Spells/Auras/SpellAuras.cpp b/src/server/game/Spells/Auras/SpellAuras.cpp
index 88f5313381..90532e89df 100644
--- a/src/server/game/Spells/Auras/SpellAuras.cpp
+++ b/src/server/game/Spells/Auras/SpellAuras.cpp
@@ -1283,24 +1283,6 @@ void Aura::HandleAuraSpecificMods(AuraApplication const* aurApp, Unit* caster, b
                 }
                 switch (GetId())
                 {
-                    case 12536: // Clearcasting
-                    case 12043: // Presence of Mind
-                        // Arcane Potency
-                        if (AuraEffect const* aurEff = caster->GetAuraEffect(SPELL_AURA_DUMMY, SPELLFAMILY_MAGE, 2120, 0))
-                        {
-                            uint32 spellId = 0;
-
-                            switch (aurEff->GetId())
-                            {
-                                case 31571: spellId = 57529; break;
-                                case 31572: spellId = 57531; break;
-                                default:
-                                    TC_LOG_ERROR("spells", "Aura::HandleAuraSpecificMods: Unknown rank of Arcane Potency (%d) found", aurEff->GetId());
-                            }
-                            if (spellId)
-                                caster->CastSpell(caster, spellId, true);
-                        }
-                        break;
                     default:
                         break;
                 }