Stun

Not so fast.

Stuns are the most common and dependable kind of disable. A hero or unit under the effect of a stun is unable to move, attack, use items, or use abilities until it wears off. Stuns will also interrupt any channeling abilities, such as using a Town Portal Scroll. Stuns may also include knockback.
Mini-stuns are a shorter version of a regular stun, usually lasting a fraction of a second. They are most useful in interrupting enemy spells or preventing enemies from moving effectively. Generally any stun less than 1 second is considered a mini-stun.
Shackle abilities are another variant of stun. They bind or tether the enemy unit to the caster or to a specific point. Some shackle abilities also provide a pulling or stunning effect. A few shackle abilities require channeling by the user but not all do.

When affected by any kind of stun, a blue swirl appears over the stunned unit.

Bashes and Mini-bashes are similar to Stuns and Mini-stuns with one main difference: bashes are unreliable and may only occur by chance. Bashes are passive and usually include bonus damage when they happen. All bashes use pseudo random distribution.

When affected by any kind of bash, a thick yellow swirl appears over the bashed unit.

Stun Abilities

Hero Abilities
Hero	Ability	Duration
Alchemist	Unstable Concoction	1.75 / 2.5 / 3.25 / 4
Ancient Apparition	Cold Feet	1.25 / 2 / 2.75 / 3.5
Beastmaster	Primal Roar	3 / 3.5 / 4
Centaur Warrunner	Hoof Stomp	2 / 2.25 / 2.5 / 2.75
Chaos Knight	Chaos Bolt	1 / 1 / 1 / 2 (Minimum) 2 / 3 / 4 / 4 (Maximum)
Clockwerk	Hookshot	1 / 1.5 / 2
Dazzle	Poison Touch	0 / 0 / 0 / 1 (Applied at end of poison duration)
Dragon Knight	Dragon Tail	2.5 / 2.75 / 3 / 3.25
Earth Spirit	Boulder Smash	0.75 / 1.25 / 1.75 / 2.25
Earthshaker	Fissure	1 / 1.25 / 1.5 / 1.75
	Aftershock	0.6 / 0.9 / 1.2 / 1.5
Enigma	Malefice	0.25 / 0.5 / 0.75 / 1 (3 instances)
Faceless Void	Chronosphere	4 / 4.5 / 5
Gyrocopter	Homing Missile	2.2 / 2.4 / 2.6 / 2.8
Invoker	Cold Snap	0.4 (Maximum of 3 / 4 / 5 / 6 / 7 / 8 / 9 instances)
Jakiro	Ice Path	1 / 1.5 / 2 / 2.5
Keeper of the Light	Mana Leak	1.5 / 2 / 2.5 / 3
Kunkka	Torrent	1.6
	Ghost Ship	1.4
Leshrac	Split Earth	2
Lina	Light Strike Array	1.6 / 1.9 / 2.2 / 2.5
Lion	Earth Spike	1.4 / 1.8 / 2.2 / 2.6
Magnus	Reverse Polarity	2.25 / 3 / 3.75
Medusa	Stone Gaze	3
Mirana	Sacred Arrow	0.01 to 5 depending on distance traveled
Monkey King	Boundless Strike	0.5 / 1 / 1.5 / 2
Morphling	Adaptive Strike (Strength)	1.5/2/2.5/3 (Minimum) 2.5/3/3.5/4 (Maximum)
Necrophos	Reaper's Scythe	1.5
Nyx Assassin	Impale	1.6 / 2 / 2.4 / 2.8
	Spiked Carapace	0.6 / 1.2 / 1.8 / 2.4
Ogre Magi	Fireblast	1.5
	Unrefined Fireblast	1.5
Phoenix	Supernova	1.5 / 2 / 2.5
Puck	Dream Coil	1.5 / 2.25 / 3 (Coil Break) 1.5 / 3 / 4.5 (Aghanim's Upgraded Break)
Rubick	Telekinesis	1.5 / 1.75 / 2 / 2.25
	Telekinesis Land	1 / 1.25 / 1.5 / 1.75
Sand King	Burrowstrike	2.17
Slardar	Slithereen Crush	1.6 / 1.9 / 2.2 / 2.5
Spirit Breaker	Charge of Darkness	1.2 / 1.6 / 2 / 2.4
Sven	Storm Hammer	1.7 / 1.8 / 1.9 / 2.0
Techies	Stasis Trap	2.5 / 3 / 3.5 / 4
Tidehunter	Ravage	2 / 2.4 / 2.8
Tiny	Avalanche	1
Tusk	Snowball	0.5 / 0.75 / 1 / 1.25
	Walrus PUNCH!	1
	Walrus Kick	1
Vengeful Spirit	Magic Missile	1.2 / 1.4 / 1.6 / 1.8
Warlock	Chaotic Offering	1
Windranger	Shackleshot	0.75 (Minimum) 2.0 / 2.6 / 3.2 /3.8 (Maximum)
Winter Wyvern	Cold Embrace	4 (Allies Only)
	Winter's Curse	3.25 / 4 / 4.75 (Main Target Only)
Witch Doctor	Paralyzing Cask	1 5 on creeps
Wraith King	Wraithfire Blast	2
Unit Abilities
Unit	Ability	Duration
Earth	Hurl Boulder	2
Familiar	Stone Form	1 / 1.25 / 1.5
Centaur Conqueror	War Stomp	2 3 on creeps
Mud Golem	Hurl Boulder	0.6
Shard Golem	Hurl Boulder	0.6
Item Abilities
Item	Ability	Duration
Abyssal Blade	Overwhelm	2

Mini-Stun Abilities

Hero Abilities
Hero	Ability	Duration
Anti-Mage	Mana Void	0.3
Bounty Hunter	Shuriken Toss	0.1
Clockwerk	Battery Assault	0.1 (16 instances)
	Power Cogs	0.85
Crystal Maiden	Frostbite	0.1
Doom	Infernal Blade	0.3
Lich	Chain Frost	0.01 (Initial Target Only)
Luna	Lucent Beam	0.6
Night Stalker	Void	0.1
Puck	Dream Coil	0.5 (Initial Stun)
Pudge	Meat Hook	0.01 (Enemies Only)
Sniper	Assassinate	0.01
Zeus	Lightning Bolt	0.2

Shackle Abilities

Hero Abilities
Hero	Ability	Duration
Bane	Fiend's Grip	5 12
Batrider	Flaming Lasso	3 / 3.5 / 4
Dark Seer	Vacuum	0.5
Enigma	Black Hole	4
Pudge	Dismember	3 6 on creeps
Shadow Shaman	Shackles	2.75 / 3.5 / 4.25 / 5
Storm Spirit	Electric Vortex	1 / 1.5 / 2 / 2.5

Bash Abilities

Hero Abilities
Hero	Ability	Bash Duration	Bash Chance	Bash Damage
Faceless Void	Time Lock	1 on heroes 2 on creeps	10% / 15% / 20% / 25%	50 / 75 / 100 / 125
Slardar	Bash of the Deep	1 on heroes 2 on creeps	10% / 15% / 20% / 25%	60 / 80 / 100 / 120
Tiny	Craggy Exterior	1 / 1.25 / 1.5 / 1.75	10% / 15% / 20% / 25%	25 / 35 / 45 / 55
Spirit Breaker	Greater Bash	1 / 1.2 / 1.4 / 1.6	17% 34% with talent	22% / 28% / 34% / 40% of movement speed
Unit Abilities
Unit	Ability	Bash Duration	Bash Chance	Bash Damage
Roshan	Bash	1.65	15%	50
Item Abilities
Item	Ability	Bash Duration	Bash Chance	Bash Damage
Skull Basher	Bash	1.4	25% (melee user) 10% (ranged user)	85
Abyssal Blade	Bash	1.4	25% (melee user) 10% (ranged user)	85

Mini-Bash Abilities

Item Abilities
Item	Ability	Mini-Bash Duration	Mini-Bash Chance	Mini-Bash Damage
Monkey King Bar	Mini-Bash	0.01	35%	160

See also

• Disable
• Pseudo Random Distribution
• Taunt