Movement Slow

Movement Slow reduces a unit's Movement Speed by a percentage. Movement Slow reduces Movement Speed after all other Movement Speed increasers and flat MS decreasers, and its magnitude can be reduced with Slow Resistance.

Static Movement Slows

State-based

Unit/Item	Source	Target	% Slow	Duration	Effect Type	Notes
Accursed	Sear	Enemy Unit(s)	5/10/15/20%	2 seconds	Magic	Applies to enemies hit by Accursed's attacks and abilities
Adrenaline	Shard Blast	Enemy Unit(s)	15% + 5% per charge	2 seconds	Magic	Maximum of 1/2/3/4 charges (Max 20/25/30/35%)
Aluna	Deja Vu	Enemy Units	25/30/35/40%	3/3.5/4/4.5 seconds	Magic	Applies to enemies touch the shadow; With Emerald Red, enemies that touch Aluna are also slowed
Amun-Ra	Ignite	Enemy Units	12/18/24/30%	3 seconds	Magic
Andromeda	Void Rip	Enemy Unit	10/20/30%	3 seconds	Physical
Arachna	Webbed Shot	On Attack	10/20/30/40%	2 seconds	Magic
Arachna	Spider Sting	Enemy Unit	40/60/80%	1.5 seconds	Physical	Spiderling's attacks re-apply the slow; Attacks up to 5 times
Armadon	Snot Storm	Enemy Unit	20 + 3/6/9/12% per charge	5 seconds	Magic	Maximum of 5 charges (Max 35/50/65/80%)
Artesia	Arcane Missile	Enemy Units	15%	3 seconds	Magic
Artillery	Mortar Strike	Enemy Units	15%	4 seconds	Magic
Artillery	Special Ammunition	Enemy Unit	13/16/19/22%	3 seconds	Magic
Berzerker	Chain Spike	Enemy Unit	50%	Up to 10 seconds	Physical	Requires Staff of the Master. Removed when the chain is broken
Blacksmith	Flaming Hammer	Enemy Units	15/20/25/30%	5/6/7/8 seconds	Magic
Blitz	Lightning Shackles	Enemy Units	100%	3 (4) seconds	Superior Magic
Booboo	Swipe	Enemy Units	75%	1.5 second	Physical
Bramble	Entangling Vine Wall	Enemy Units	30/40/50%	1.5 seconds	Physical	Vines apply the slow on attack
Bushwack	Crippling Dart	Enemy Unit	70%	1 second	Physical
Catman Champion	Wild Strike	Enemy Units	25%	3 seconds	Magic
Qi	Ancestral Assault	Enemy Unit	20%	0.5/0.75/1 second	Superior Magic
Chronos	Time Leap	Enemy Units	20/25/30/35%	3 seconds	Magic
Circe	Doppelganger	Enemy Hero	20%	2 seconds	Magic
Dampeer	Terrorize	Enemy Units	50%	1-1.75(2) seconds	Magic	Fear; Duration increases by 0.25 seconds per Essence stored
Dawnbringer	Passive	On Attack	30% (Melee) 15%	3 seconds	Magic
Deadlift	Onslaught	Enemy Unit	50%	2 seconds	Magic
Doctor Repulsor	Electric Frenzy	Enemy Units	80%	0.6 seconds	Magic
Draconis	Dragonflame	Enemy Units	25%	2 seconds	Magic	Slow is applied after the stun expires
Dreadbeetle Queen	Dread Venom	Enemy Unit	40%	4 seconds	Magic
Drunken Master	Lunge	Enemy Unit	15/20/25/30% + 30% upon consuming Drink charges	2 seconds	Physical	Requires to consume 6 Drink charges to get the bonus slow
Ellonia	Frosted	Enemy Units	2% per charge	4 seconds	Superior Magic	Applies 5 charges with Glacial Spike, 2 charges per hit with Frigid Field, and 1 charge per hit with Absolute Zero; Removed when Flash Freeze is applied
Emerald Warden	Hunter's Command	Enemy Hero	20%	4 seconds	Magic
Engineer	Steam Turret	Enemy Units	2.5/3/3.5/4% per charge	3 seconds	Magic	Maximum of 10 charges; Charges are individually timed
Flux	Release	Enemy Units	45%	4 seconds	Magic
Frostburn	Passive	On Attack	30% (Melee) 15%	3 seconds	Magic
Frostfield Plate	Activation	Enemy Units	20%	4 seconds	Magic
Frostwolf's Skull	Passive	Enemy Unit(s)	40% (Melee) 20% (Ranged)	3 seconds	Magic	Applies on attack, activation, or single-target abilities
Frostwolf's Skull	Activation	Enemy Units	20% (Scouting Frost Wolf) 50% (Dire Frost Wolf)	3 seconds (Scouting Frost Wolf) 4 seconds	Magic	Scouting Frost Wolf from first activation, Dire Frost Wolf from second activation
Frozen Light	Passive	On Attack	25% (Melee) 15%	3 seconds	Magic
Gauntlet	Enfeeble	On Attack	1% per charge	3 seconds	None	Maximum of 35 charges; Charges are individually timed
Gemini	Twin Breath	Enemy Units	15/20/25/30%	3 seconds	Magic
Genjuro	Activation	On Attack	55%	3 seconds	Magic
Geomancer	Crystal Field	Enemy Units	50%	4 seconds	Superior Magic	SotM version only
Glacius	Tundra Blast	Enemy Units	30%	3/3.5/4/4.5 seconds	Magic
Gravekeeper	Defiling Touch	On Attack	25/30/35/40%	2 seconds	Physical
Gunblade	Crippling Slugs	Enemy Units	8/11/14/17% per charge	3 seconds	Physical	Fires 3 shots per cast (Up to 24/33/42/51% Movement Slow)
Hellbringer	Evil Presence	Enemy Units	25%	5 seconds	Magic
Ice	Ice Breath	Enemy Units	15/25/35%	3 seconds	Magic
Ichor	Life Leech	Enemy Unit	30%	5 seconds	Magic
Icebrand	Passive	On Attack	15% (Melee) 10%	3 seconds	Magic
Kane	Waylay	Enemy Units	20%	4 seconds	Physical
Kinesis	Telekinetic Lift	Enemy Unit	15%	2 seconds	Magic
Kinesis	Stasis Smash	Enemy Units	50%	2 seconds	Magic	Applies to units around main target on impact
King Klout	Parade of Power	Enemy Units	70%	0.5 to 1.5/2/2.5 seconds	Superior Magic	Fear
Klanx	Goon Squad	Enemy Unit	20%	2 seconds	Magic	Applies to 2nd Drone's attacks
Kongor	Slam	Enemy Units	50%	2 seconds (4 seconds on non-hero units)	Magic
Kraken	Torrent	Enemy Unit	40%	3 seconds	Magic
Kuldra's Sheepstick	Activation	Enemy Unit	100%	3 seconds	Magic
Lodestone	Rocket Drill	Enemy Units	60%	2 seconds	Magic	First activation
Magebane	Mana Rift	Enemy Unit	90%	1 second	Superior Magic	Primary target only
Magmus	Eruption	Enemy Units	30%	3 seconds (5 seconds on non-hero units)	Magic
Martyr	Retribution	Enemy Unit	15-50%	3 seconds	Magic	Slow increases by 1% per 1% of Health missing
Midas	Golden Salvo	Enemy Units	10% per charge	3 seconds	Magic	Adds one charge put flask hit; Maximum of 3 charges
Xemplar	Wall of Mirrors	Enemy Units	30%	2 seconds	Magic
Minion	Crippling Strike	On Attack	1/2/3/4% per charge	2 seconds	Magic	Maximum of 6 charges
Moira	Arcane Vortex	Enemy Units	35%	2.5 seconds	None
Monkey King	Heavenly Vault	Enemy Units	20/40/60/80%	2 seconds	Physical
Moraxus	More Axes	Enemy Unit	15% per charge	3 seconds	Magic	Maximum of 3 charges
Myrmidon	Wave Form	Enemy Units	15/20/25/30%	6 seconds	Magic
Myrmidon	Forced Evolution	Enemy Unit(s)	25/30/35%	3 seconds	Magic	Applies to enemy units hit by an attack while Evolved
Oogie	Tar Quake	Enemy Units	5-55%	2 seconds	Magic	Base slow of 5%, increases by 5% per consecutive cast (Max 5 times); Slow increases by up to 25% based on distance from the center on impact
Pearl	Asphyxiate	Enemy Unit	80%	0.6 seconds	Magic	Applies to initial target if target is an enemy
Pearl	Asphyxiate	Enemy Units	80%	0.6/0.9/1.2/1.5 seconds	Magic	Applies on bubble explosion
Pestilence	Impale	Enemy Units	20%	4 seconds	Magic
Plague Rider	Contagion	Enemy Units	30%	2.5/3/3.5/4 seconds	Magic
Plague Rider	Plague Carrier	Enemy Unit	30%	3 seconds	Superior Magic
Pollywog Priest	Morph	Enemy Unit	100%	1.25/2/2.75/3.5 seconds	Magic
Predator	Venomous Leap	Enemy Unit	40%	2/3/4/5 seconds	Magic
Prisoner 945	Shackled	Enemy Unit	20/25/30/35%	3.5/4/4.5/5 seconds	Physical	Removed when ball and chain is destroyed
Prisoner 945	Prison Break	Enemy Heroes	80%	2/2.5/3 seconds	Physical	Applies if targets are attached for 2 seconds
Prophet	Shared Fate	Enemy Units	0/1/2-50%	3.25/4.5/6 seconds	Magic	Slow decreases by 5/4/3% every 0.25 seconds after 1/1.5/2 seconds
Rampage	Horned Strike	On Attack	80%	1.5/2/2.5/3	Physical	6 seconds cooldown
Reckless Horseman	Flaming Surprise	Enemy Units	100%	3 seconds	Magic
Revenant	Defile	On Attack	20% per charge	4 seconds	Magic	Charges are individually timed
Riftwalker	Shared Existence	Enemy Unit	20/25/30/35-40/50/60/70%	4 seconds	Magic	Slow increases by 4/5/6/7% when target takes non-DoT damage (Max 5 times)
Riptide	Watery Grave	Enemy Unit	50%	2/2.5/3/3.5 seconds	Magic
Salomon	Avenging Leap	Enemy Unit	20%	1.5/2/2.5/3 seconds	Magic
Sand Wraith	Mirage	Enemy Units	50%	2 seconds	Superior Magic	Fear; SotM version only
Sand Wraith	Mirage	Enemy Units	15%	6 seconds	Superior Magic	SotM version only
Scout	Marksman Shot	Non-Boss Enemy Unit	20/30/40%	4 seconds	Superior Magic
Shadowblade	Gargantuan's Blast	Enemy Units	25%	2.5/3/3.5/4 seconds	Magic
Shellshock	Fireflies	Enemy Units	20%	2 seconds	Magic
Skrap	Zoomerang	Enemy Units	20% per charge	3 seconds	Magic	Max 2 charges
Snotter Boss	Snotter Charge	Enemy Unit	50%	2 seconds	Magic
Snotling	Snotling Slow	On Attack	1% per charge	3 seconds	None	Maximum of 100 charges
Solstice	Shadow Dash	Enemy Unit	35%	3.5 seconds	Magic
Solstice	Lunar Judgment	Enemy Units	50%	1.5 seconds	Magic	Fear
Soulstealer	Soul Burst	Enemy Units	25%	5 seconds	Magic
Slither	Toxicity	On Attack	3/6/9/12%	8 seconds	Magic	1/3 duration when applied by Illusions
Sporespitter	Spore Launcher	On Attack	20%	1.5 seconds	Magic
Tarot	Bound by Fate	Enemy Units	30%	Up to 5 seconds	Magic	Main target only; Removed when tether is broken; Slows for full duration if no one was tethered
The Madman	Barrel Roll	Enemy Units	30/37/44/50%	3.5 seconds	Magic
Tremble	Impalers	On Attack	10/20/30/40%	2.5 seconds	Physical	Does not stack with Boris's Impalers slow
The Chipper	Tar Toss	Enemy Units	10-20/40/60/80%	2/3/4/5 seconds	Magic	Slow increases the closer an enemy was to the center on impact
The Gladiator	Pitfall	Enemy Units	30%	1/2/3/4 seconds	Magic	Applies after enemy lands
The Dark Lady	Cover of Darkness	Enemy Units	5/10/15%	4/5/6 seconds	Magic
Tundra	Cold Shoulder	Enemy Unit	10/20/30/40%	2 seconds	Magic	Applies when target hit by Cold Shoulder is attacked
Tundra	Avalanche	Enemy Units	50%	2/3/4 seconds	Superior Magic	Applies to units that were pushed away
Vindicator	Final Chapter	Enemy Heroes	40%	1 second	Superior Magic
Warchief	Spirit Walk	Enemy Units	35%	2.5 seconds	Magic
Witch Slayer	Miniaturization	Enemy Unit	100%	1.25/2/2.75/3.5 seconds	Magic

Affector-based

Unit/Item	Source	Target	% Slow	Duration	Effect Type	Notes
Balphagore	Regurgitate	Enemy Units	20%	3 seconds	Magic	Lingers for 0.5 seconds
Chronos	Chronofield	Ally Units	80%	4/5/6 seconds	Superior Magic	SotM version only; Applies to allies inside the Chronofield
Cthulhuphant	Dreams of Madness	Enemy Heroes	15%	16 seconds	Magic	Aura; 400 radius
Devourer	Decay	Enemy Units	20%	While toggled	Magic	Lingers for 2 seconds
Fayde	Shadow Walk	Enemy Units	8/12/16/20%	Varies	Magic	Trail lasts 2.5 seconds
Flint Beastwood	Explosive Flare	Enemy Units	15/20/25/30%	6 seconds	Magic
Gawain	Emerald Storm	Enemy Units	30%	4 seconds (Channeling)	Magic
Glacius	Glacial Downpour	Enemy Units	30%	4 seconds (Channeling)	Superior Magic	Applies to units around Glacius while channeling; Lingers for 1 second
Jeraziah	Protective Charm	Enemy Units (Aura)	7/14/21/28%	N/A	Magic	Applies around self or target with Protective Charm applied
Kraken	Release the Kraken!	Enemy Units	50%	3/4/5 seconds	Superior Magic
Monarch	Noxious Nightcrawler	Enemy Units	25/30/35/40%	4 seconds	Magic
Night Hound	Smoke Bomb	Enemy Units	25%	6 seconds	Magic
Parallax	Earthshatter	Enemy Units	10-30%	N/A	Magic	Slow increases to 30% over 2.5 seconds; lingers for 2 seconds
Pustula	Kamikaze	Enemy Units	50%	5 seconds	Magic	Lingers for 0.25 second
Sand Wraith	Desert's Curse	Enemy Units	12/16/20/24%	Varies	Magic	Sand trail lasts 8 seconds; Slow lingers for 3 seconds
Sapphire	Unstable Shard	Enemy Units	15%	Varies	Magic	Unstable Shard lasts up to 10 seconds
Vindicator	Glyph of Silence	Enemy Units	50%	Varies	Magic	Totem lasts 5 seconds and applies slow in 300 radius; Slow lingers for 0.5 second
Vulture Lord	Tornado	Enemy Units	15%	30 seconds (Channeling)	Magic
Zephyr	Typhoon	Enemy Units	Up to 100%	6/8/10 seconds	Superior Magic	Slow increases the closer an enemy is to the center

Tapering Movement Slows

Some Movement Slows taper over a duration, losing its effectiveness over time, or even gain in some cases. Movement Slows typically taper to 0% over its duration, but the decrease is not always linear.

State-based

Unit/Item	Source	Target	% Slow	Duration	Mid-point	Effect Type	Notes
Balphagore	Hell on Newerth	Enemy Units	50%	4 seconds	50% @ 1.33 seconds	Magic	Requires 40+ charges
Berzerker	Chain Spike	Enemy Unit	40%	Up to 5 seconds	Linear	Physical	Removed when the chain is broken
Bombardier	Bombardment	Enemy Units	40/50/60/70%	1 second	40/50/60/70% @ 0.5 seconds	Magic	Applied in 0.5 second intervals 5 times
Deadwood	Uproot	Enemy Unit	75%	1.5/2/2.5/3 seconds	Linear	Magic	Applied on 5th attack while holding a tree
Deadwood	Oakbolt	Enemy Unit	75%	1.5/2/2.5/3 seconds	Linear	Magic
Deadwood	Willowmaker	Enemy Unit	100%	5 seconds	100% @ 2.5/3/3.5 seconds	Physical
Demented Shaman	Entangle	Enemy Unit	40-40/60/80/100%	2 seconds	Linear	Physical
Electrician	Cleansing Shock	Enemy Unit(s)	40/60/80%	5 seconds	30/40/50% @ 1.66 seconds	Superior Magic
Engineer	Energy Field	Enemy Units	100%	2 seconds	Linear	Superior Magic	Applies when a unit touches the field
King Klout	Goblin Toss	Enemy Units	10/15/20/25%	3 seconds	10%	Magic	Applies with Red or Green Goblins only
Klanx	B.A.N.G.	Enemy Units	90%	3 seconds	Linear	Magic	Applies if enemy was facing the flashbang
Lord Salforis	Life Tap	Enemy Units	40%	2 seconds	Linear	Magic
Maliken	Sword Throw	Enemy Units	20/30/40/50%	6 seconds	20/30/40/50% @ 2 seconds	Magic
Master of Arms	Overcharged Shot	Enemy Units	80% or 40%	3 or 1.5 seconds	Linear	Magic	80% for 3 seconds on first unit hit; 40% for 1.5 seconds on split projectiles
Nullfire Blade	Activation	Enemy Unit	60%	4 seconds	Linear	None
Ophelia	Nature's Wrath	Enemy Unit	15/20/25/30%	7 seconds	Linear	Magic
Pandamonium	Flick	Enemy Unit	40%	6 seconds	40% @ 2 seconds	Physical
Parallax	Ionic Dash	Enemy Units	40/50/60/70%	3 seconds	Linear	Magic
Prisoner 945	The ol' Ball and Chain	Enemy Units	80%	1 second	Linear	Physical	Applies after enemies are dragged back
Rally	Demoralizing Roar	Enemy Units	30/45/60/75%	3 seconds	15/22.5/30/42.5% @ 1 second	Magic
Riptide	Eye of the Storm	Enemy Units	100%	5 seconds	Linear	Magic
Shellshock	Superconductor	Enemy Units	80%	3 seconds	Linear	Magic
Sir Benzington	Knightfall	Enemy Units	50%	2 seconds	Linear	Superior Magic
Solstice	Breath of Sol	Enemy Units	50%	6 seconds	50% @ 2 seconds	Magic
Slither	Poison Spray	Enemy Units	50%	6 seconds	50% @ 2 seconds	Magic
The Dark Lady	Taint Soul	Enemy Unit	60%	2/3/4/5 seconds	Linear	Magic
Vagabond Assassin	The Assassin's Touch	Enemy Unit	80%	5 seconds	Linear	Superior Magic
Vorax	Rock Smash	Enemy Hero	75%	2 seconds	Linear	Physical
Wretched Hag	Haunt	Enemy Unit(s)	20/30/40/50%	7 seconds	20/30/40/50% @ 1.4 seconds	Magic	Also applies to Bat Blast

Affector-based

These Movement Slows will be at full strength as long as you are within the affector that applies it, and tapers off over its lingering time.

Unit/Item	Source	Target	% Slow	Duration	Mid-point	Effect Type	Notes
The Chipper	Sawblade Showdown	Enemy Units	90%	8 seconds	50% @ 2 seconds	Superior Magic	SotM version only; Slow tapers over 4 seconds after leaving the saws

Slow Resistance

Slow Resistance reduces the magnitude of a Movement Slow by its percentage.

Hero	Source	Target	% Slow Resistance	Duration	Notes
Apex	Fire Surge	Self	100%	2.5 seconds	Attacking ends the effect early.
Berzerker	Carnage	Self	40/60/80%	10 seconds
Chronos	Chronofield	Self	100%	4/5/6 seconds	Applies to self while inside the Chronofield
Deadwood	Clearcutting	Self	25/50/75/100%	2 seconds	Applies after walking over a tree
Flying Courier	Speed Boost	Self	100%	20 seconds
Runes#Haste Rune	Rune	User	100%	30 seconds
Kane	Face Off	Self & Enemy Hero	100%	3.5/4.5/5.5 seconds	Duration refreshes when both units clash
Moraxus	Arcane Shield	Self	40/60/80/100%	6 seconds	Applies after absorbing an ability or projectile
Rampage	Stampede	Self	100%	While charging
War Beast	Metamorphosis	Owned Units	100%	14/15/16 seconds