diff --git a/sim/mage/combustion.go b/sim/mage/combustion.go
index 12fc1ec2b..bcc85d9d0 100644
--- a/sim/mage/combustion.go
+++ b/sim/mage/combustion.go
@@ -36,6 +36,9 @@ func (mage *Mage) registerCombustionSpell() {
 				spell.DealDamage(sim, result)
 				spell.RelatedDotSpell.Cast(sim, target)
 			}
+			if mage.t13ProcAura != nil {
+				spell.CD.Reduce(time.Second * time.Duration(5*mage.t13ProcAura.GetStacks()))
+			}
 		},
 	})
 
@@ -58,6 +61,11 @@ func (mage *Mage) registerCombustionSpell() {
 		Dot: core.DotConfig{
 			Aura: core.Aura{
 				Label: "Combustion Dot",
+				OnExpire: func(aura *core.Aura, sim *core.Simulation) {
+					if mage.t13ProcAura != nil {
+						mage.t13ProcAura.Deactivate(sim)
+					}
+				},
 			},
 			NumberOfTicks:       10,
 			TickLength:          time.Second,
diff --git a/sim/mage/fire/TestFire.results b/sim/mage/fire/TestFire.results
index 06d19f087..3d1137835 100644
--- a/sim/mage/fire/TestFire.results
+++ b/sim/mage/fire/TestFire.results
@@ -1259,8 +1259,8 @@ dps_results: {
 dps_results: {
  key: "TestFire-AllItems-TimeLord'sRegalia"
  value: {
-  dps: 25696.78104
-  tps: 25273.4801
+  dps: 26698.06292
+  tps: 26232.03683
  }
 }
 dps_results: {
diff --git a/sim/mage/items.go b/sim/mage/items.go
index 2c016eb41..ed37fdc9c 100644
--- a/sim/mage/items.go
+++ b/sim/mage/items.go
@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"github.com/wowsims/cata/sim/core"
+	"github.com/wowsims/cata/sim/core/stats"
 )
 
 // T11
@@ -83,11 +84,47 @@ var ItemSetTimeLordsRegalia = core.NewItemSet(core.ItemSet{
 		// Your Arcane Blast has a 100% chance and your Fireball, Pyroblast, Frostfire Bolt, and Frostbolt spells have a 50% chance to grant Stolen Time, increasing your haste rating by 50 for 30 sec and stacking up to 10 times.
 		// When Arcane Power, Combustion, or Icy Veins expires, all stacks of Stolen Time are lost.
 		2: func(agent core.Agent) {
-			// mage := agent.(MageAgent).GetMage()
+			character := agent.GetCharacter()
+			mage := agent.(MageAgent).GetMage()
+
+			// Stack reset handlers can be found in:
+			// combustion.go
+			// talents_arcane.go
+			// talents_frost.go
+			mage.t13ProcAura = core.MakeStackingAura(character, core.StackingStatAura{
+				Aura: core.Aura{
+					Label:     "Stolen Time",
+					ActionID:  core.ActionID{SpellID: 105785},
+					Duration:  time.Second * 30,
+					MaxStacks: 10,
+				},
+				BonusPerStack: stats.Stats{stats.HasteRating: 50},
+			})
+
+			newStolenTimeTrigger := func(procChance float64, spellMask int64) {
+				core.MakeProcTriggerAura(&character.Unit, core.ProcTrigger{
+					Name:           "Stolen Time Trigger",
+					ActionID:       core.ActionID{ItemID: 105788},
+					Callback:       core.CallbackOnSpellHitDealt,
+					ClassSpellMask: spellMask,
+					ProcChance:     procChance,
+					Outcome:        core.OutcomeLanded,
+					Handler: func(sim *core.Simulation, spell *core.Spell, result *core.SpellResult) {
+						mage.t13ProcAura.Activate(sim)
+						mage.t13ProcAura.AddStack(sim)
+					},
+				})
+			}
+
+			newStolenTimeTrigger(1, MageSpellArcaneBlast)
+			newStolenTimeTrigger(0.5, MageSpellFireball|MageSpellPyroblast|MageSpellFrostfireBolt|MageSpellFrostbolt)
 		},
 		// Each stack of Stolen Time also reduces the cooldown of Arcane Power by 7 sec, Combustion by 5 sec, and Icy Veins by 15 sec.
 		4: func(agent core.Agent) {
-			// mage := agent.(MageAgent).GetMage()
+			// Cooldown reduction handlers can be found in:
+			// combustion.go
+			// talents_arcane.go
+			// talents_frost.go
 		},
 	},
 })
diff --git a/sim/mage/mage.go b/sim/mage/mage.go
index 749ec3c82..b72a32107 100644
--- a/sim/mage/mage.go
+++ b/sim/mage/mage.go
@@ -24,6 +24,7 @@ type Mage struct {
 	frostfireOrb *FrostfireOrb
 
 	t12MirrorImage *T12MirrorImage
+	t13ProcAura    *core.Aura
 
 	arcaneMissilesTickSpell *core.Spell
 	Combustion              *core.Spell
diff --git a/sim/mage/talents_arcane.go b/sim/mage/talents_arcane.go
index 536618dba..7f5ca4f81 100644
--- a/sim/mage/talents_arcane.go
+++ b/sim/mage/talents_arcane.go
@@ -305,12 +305,15 @@ func (mage *Mage) registerArcanePowerCD() {
 			mage.arcanePowerCostMod.Activate()
 			arcanePowerDmgMod.Activate()
 		},
-		OnExpire: func(aura *core.Aura, sim *core.Simulation) {
+		OnExpire: func(_ *core.Aura, sim *core.Simulation) {
 			if mage.arcanePowerGCDmod != nil {
 				mage.arcanePowerGCDmod.Deactivate()
 			}
 			mage.arcanePowerCostMod.Deactivate()
 			arcanePowerDmgMod.Deactivate()
+			if mage.t13ProcAura != nil {
+				mage.t13ProcAura.Deactivate(sim)
+			}
 		},
 	})
 
@@ -323,8 +326,11 @@ func (mage *Mage) registerArcanePowerCD() {
 				Duration: time.Second * 120,
 			},
 		},
-		ApplyEffects: func(sim *core.Simulation, _ *core.Unit, _ *core.Spell) {
+		ApplyEffects: func(sim *core.Simulation, _ *core.Unit, spell *core.Spell) {
 			arcanePowerAura.Activate(sim)
+			if mage.t13ProcAura != nil {
+				spell.CD.Reduce(time.Second * time.Duration(7*mage.t13ProcAura.GetStacks()))
+			}
 		},
 	})
 	mage.AddMajorCooldown(core.MajorCooldown{
diff --git a/sim/mage/talents_frost.go b/sim/mage/talents_frost.go
index cc86acba1..78d9fc7a2 100644
--- a/sim/mage/talents_frost.go
+++ b/sim/mage/talents_frost.go
@@ -91,8 +91,11 @@ func (mage *Mage) registerIcyVeinsCD() {
 		OnGain: func(aura *core.Aura, sim *core.Simulation) {
 			icyVeinsMod.Activate()
 		},
-		OnExpire: func(aura *core.Aura, sim *core.Simulation) {
+		OnExpire: func(_ *core.Aura, sim *core.Simulation) {
 			icyVeinsMod.Deactivate()
+			if mage.t13ProcAura != nil {
+				mage.t13ProcAura.Deactivate(sim)
+			}
 		},
 	})
 
@@ -106,7 +109,6 @@ func (mage *Mage) registerIcyVeinsCD() {
 		},
 
 		Cast: core.CastConfig{
-
 			CD: core.Cooldown{
 				Timer:    mage.NewTimer(),
 				Duration: time.Second * time.Duration(180*[]float64{1, .93, .86, .80}[mage.Talents.IceFloes]),
@@ -121,8 +123,11 @@ func (mage *Mage) registerIcyVeinsCD() {
 			return !icyVeinsAura.IsActive() && !mage.frostfireOrb.IsEnabled()
 		},
 
-		ApplyEffects: func(sim *core.Simulation, _ *core.Unit, _ *core.Spell) {
+		ApplyEffects: func(sim *core.Simulation, _ *core.Unit, spell *core.Spell) {
 			icyVeinsAura.Activate(sim)
+			if mage.t13ProcAura != nil {
+				spell.CD.Reduce(time.Second * time.Duration(15*mage.t13ProcAura.GetStacks()))
+			}
 		},
 	})