diff --git a/zone/effects.cpp b/zone/effects.cpp
index 2537751aa..2a1e189ce 100644
--- a/zone/effects.cpp
+++ b/zone/effects.cpp
@@ -356,58 +356,10 @@ int32 Client::GetActSpellCost(uint16 spell_id, int32 cost)
 		cost -= mana_back;
 	}
 
-	// This formula was derived from the following resource:
-	// http://www.eqsummoners.com/eq1/specialization-library.html
-	// WildcardX
-	float PercentManaReduction = 0;
-	float SpecializeSkill = GetSpecializeSkillValue(spell_id);
-	int SuccessChance = zone->random.Int(0, 100);
-
-	float bonus = 1.0;
-	switch(GetAA(aaSpellCastingMastery))
-	{
-	case 1:
-		bonus += 0.05;
-		break;
-	case 2:
-		bonus += 0.15;
-		break;
-	case 3:
-		bonus += 0.30;
-		break;
-	}
-
-	bonus += 0.05f * GetAA(aaAdvancedSpellCastingMastery);
-
-	if(SuccessChance <= (SpecializeSkill * 0.3 * bonus))
-	{
-		PercentManaReduction = 1 + 0.05f * SpecializeSkill;
-		switch(GetAA(aaSpellCastingMastery))
-		{
-		case 1:
-			PercentManaReduction += 2.5;
-			break;
-		case 2:
-			PercentManaReduction += 5.0;
-			break;
-		case 3:
-			PercentManaReduction += 10.0;
-			break;
-		}
-
-		switch(GetAA(aaAdvancedSpellCastingMastery))
-		{
-		case 1:
-			PercentManaReduction += 2.5;
-			break;
-		case 2:
-			PercentManaReduction += 5.0;
-			break;
-		case 3:
-			PercentManaReduction += 10.0;
-			break;
-		}
-	}
+	int spec = GetSpecializeSkillValue(spell_id);
+	int PercentManaReduction = 0;
+	if (spec)
+		PercentManaReduction = 1 + spec / 20; // there seems to be some non-obvious rounding here, let's truncate for now.
 
 	int16 focus_redux = GetFocusEffect(focusManaCost, spell_id);