diff --git a/common/spdat.h b/common/spdat.h
index 837f10f78..42e2d0d4c 100644
--- a/common/spdat.h
+++ b/common/spdat.h
@@ -864,9 +864,9 @@ typedef enum {
 //#define SE_Endurance_Absorb_Pct_Damage	521 //
 //#define SE_Instant_Mana_Pct			522 //
 //#define SE_Instant_Endurance_Pct		523 //
-//#define SE_Duration_HP_Pct			524 //
-//#define SE_Duration_Mana_Pct			525 //
-//#define SE_Duration_Endurance_Pct		526 //
+#define SE_Duration_HP_Pct				524 //
+#define SE_Duration_Mana_Pct			525 //
+#define SE_Duration_Endurance_Pct		526 //
 
 
 // LAST
diff --git a/zone/bonuses.cpp b/zone/bonuses.cpp
index e6c99f154..0c25c5b92 100644
--- a/zone/bonuses.cpp
+++ b/zone/bonuses.cpp
@@ -1487,6 +1487,8 @@ void Mob::ApplyAABonuses(const AA::Rank &rank, StatBonuses *newbon)
 			}
 			break;
 
+
+
 		// to do
 		case SE_PetDiscipline:
 			break;
@@ -3250,6 +3252,7 @@ void Mob::ApplySpellsBonuses(uint16 spell_id, uint8 casterlevel, StatBonuses *ne
 				if (new_bonus->trap_slots < effect_value)
 					new_bonus->trap_slots = effect_value;
 				break;
+
 		
 			//Special custom cases for loading effects on to NPC from 'npc_spels_effects' table
 			if (IsAISpellEffect) {
diff --git a/zone/spell_effects.cpp b/zone/spell_effects.cpp
index 4fdb926b4..0229afddc 100644
--- a/zone/spell_effects.cpp
+++ b/zone/spell_effects.cpp
@@ -3777,6 +3777,59 @@ void Mob::DoBuffTic(const Buffs_Struct &buff, int slot, Mob *caster)
 			break;
 		}
 
+		case SE_Duration_HP_Pct: {
+
+			effect_value = spells[buff.spellid].base[i];
+			int32 amt = abs(GetMaxHP() * effect_value / 100);
+			if (amt > spells[buff.spellid].max[i])
+				amt = spells[buff.spellid].max[i];
+			
+			if (effect_value < 0) { 
+				Damage(this, amt, 0, EQ::skills::SkillEvocation, false);
+			}
+			else { 
+				HealDamage(amt);
+			}
+			break;
+		}
+
+		case SE_Duration_Mana_Pct: {
+
+			effect_value = spells[buff.spellid].base[i];
+			int32 amt = abs(GetMaxHP() * effect_value / 100);
+			if (amt > spells[buff.spellid].max[i])
+				amt = spells[buff.spellid].max[i];
+
+			if (effect_value < 0) {
+				
+				SetMana(GetMana() - amt);
+			}
+			else {
+				SetMana(GetMana() + amt);
+			}
+			break;
+		}
+
+		case SE_Duration_Endurance_Pct: {
+
+			effect_value = spells[buff.spellid].base[i];
+			int32 amt = abs(GetMaxHP() * effect_value / 100);
+			if (amt > spells[buff.spellid].max[i])
+				amt = spells[buff.spellid].max[i];
+
+			if (IsClient())
+			{
+				if (effect_value < 0) {
+					CastToClient()->SetEndurance(CastToClient()->GetEndurance() - amt);
+				}
+				else {
+					HealDamage(amt);
+					CastToClient()->SetEndurance(CastToClient()->GetEndurance() + amt);
+				}
+			}
+			break;
+		}
+
 		default: {
 			// do we need to do anyting here?
 		}