diff --git a/changelog.txt b/changelog.txt
index 698d84044..6c87c8534 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -6,6 +6,7 @@ These effects when present in buffs prevent each other from stacking,
 Any effect with B prevents A, C prevents B, D prevents C.
 Kayen: Implemented SE_DamageModifier2 (Stacks with SE_DamageModifier, mods damage by skill type)
 Kayen: Implemented SE_AddHatePct (Modifies +/- your total hate on NPC by percent)
+Kayen: Implemented SE_AddHateOverTimePct (Modifies +/- your total hate on NPC by percent over time)
 
 == 06/13/2014 ==
 Kayen: For table 'npc_spell_effects_entries' setting se_max for damage shield effects (59) will now determine the DS Type (ie burning)
diff --git a/common/spdat.h b/common/spdat.h
index f03e944c9..4edd6543b 100644
--- a/common/spdat.h
+++ b/common/spdat.h
@@ -602,8 +602,8 @@ typedef enum {
 #define SE_SpellThresholdGuard			452 // implemented  Partial Spell Rune that only is lowered if spell hits are over X amount of damage
 #define SE_TriggerMeleeThreshold		453 // implemented  Trigger effect on X amount of melee damage taken
 #define SE_TriggerSpellThreshold		454 // implemented  Trigger effect on X amount of spell damage taken
-#define SE_AddHatePct					455 // implement - Modify total hate by %
-//#define SE_AddHateOverTimePct			456 // not used
+#define SE_AddHatePct					455 // implemented  Modify total hate by %
+#define SE_AddHateOverTimePct			456 // implemented  Modify total hate by % over time.
 //#define SE_ResourceTap				457 // not used
 //#define SE_FactionModPct				458 // not used
 #define SE_DamageModifier2				459 // implemented - Modifies melee damage by skill type
diff --git a/zone/spell_effects.cpp b/zone/spell_effects.cpp
index f78d0e5c5..9a536b832 100644
--- a/zone/spell_effects.cpp
+++ b/zone/spell_effects.cpp
@@ -3530,6 +3530,14 @@ void Mob::DoBuffTic(uint16 spell_id, int slot, uint32 ticsremaining, uint8 caste
 				}
 			}
 
+			case SE_AddHateOverTimePct:
+			{				
+				if (IsNPC())
+					CastToNPC()->SetHate(caster, (CastToNPC()->GetHateAmount(caster) * (100 + spell.base[i]) / 100));
+
+				break;
+			}
+
 			default:
 			{
 				// do we need to do anyting here?