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Slardar icon.png
Strength attribute symbol.png
Agility attribute symbol.png
Intelligence attribute symbol.png
21 + 3.6
17 + 2.4
15 + 1.5
Level 0 1 15 25 30
Health 200 620 1620 2580 2980
+0.5 +2.6 +7.64 +12.44 +14.44
Mana 75 255 507 831 939
+0 +0.75 +1.8 +3.15 +3.63
Armor 3 5.83 11.43 17.43 19.77
Damage Block 16 (50%)
Magic Resistance 25%
Status Resistance 0%
Damage 30‒38 51‒59 101‒109 149‒157 169‒177
Attack Rate 0.59/s 0.69/s 0.89/s 1.1/s 1.18/s
Attack Range Melee 150 (600)
Attack Speed ▶️ 100 (1.7s BAT)
Attack Animation 0.36+0.64
Projectile Speed 0
Movement Speed ▶️ 300
Turn Rate Takes 0.175s to turn 180°. 0.6
Collision Size 24
Vision Range (G) 1800 • 800
Legs 0
Gib Type Default
Ability Upgrades
Upgradable by Aghanim's Scepter.

Upgradable by Aghanim's Shard.
Guardian Sprint
Slithereen Crush
Slithereen Crush
Chases down his enemies to weaken and bash them.
Born under the immense pressure of the deep, always ready to find and demolish his foes, Slardar quickly slithers and Sprints into battle with one muscular tail, chasing down legged foes with alarming swiftness. And with little time to react, they were bathed with his Corrosive Haze, exposing their position while shattering their defenses. Once discovered, the Slithereen Guard Smashes the Ground, dazing nearby enemies just long enough to pummel and Macerate them.
Guardian Sprint
Guardian Sprint
Slithereen Crush
Slithereen Crush
Bash of the Deep
Corrosive Haze
Roles: Carry Carry Durable Durable Initiator Initiator Disabler Disabler Escape Escape
Complexity: ★☆☆


Slardar minimap icon.pngSlardar, the Slithereen Guard
▶️ "I guard what slumbers in the deeps."
Slardar is a Slithereen, one of the Deep Ones, guardian of a vast network of sunken cities and the ancient riches buried within them. In the lightless gulf of the deepest ocean abysses, the Slithereen Guard patrols secret treasure rooms, ever vigilant against the subaqueous thieves sent into the deeps by covetous dryland sorcerers. He is utterly loyal, and his taciturn nature hides deep knowledge of the most secret places of the sea. He rises to the shallows in spite of the pain caused him by brightness, to commit reconnaissance, to make sure no one is conspiring against the depths, and sometimes in relentless pursuit of the rare few who manage to steal off with an item from the Sunken Treasury. Because he has spent his whole life at great pressure, under tremendous weight of the sea, Slardar the Slithereen Guard is a creature of immense power.


Guardian Sprint
Guardian Sprint icon.png
No Target
Slardar slithers ahead, moving significantly faster and passing through units. Slardar gains movement speed bonus while in the river.
Cast Animation: 0+0
River Move Speed Bonus: 15%
Active Move Speed Bonus: 25%/30%/35%/40%
Active Duration: 10
With Aghanim's Scepter River Health Regen Bonus: 30
With Aghanim's Scepter River Armor Bonus: 10
With Aghanim's Scepter River Status Resistance Bonus: 40%
Cooldown: 29/25/21/17 (Talent 26/22/18/14)
Mana: 25
Upgradable by Aghanim's Scepter.
Aghanim's Scepter Upgrade:
Provides additional HP Regen, Armor and Status Resistance while in a puddle or in the river.
Modifiers [?]
As Slardar has made the transition from the Deeps, it has been necessary to use his powerful tail for sprinting instead of swimming.


  • Guardian Sprint does not interrupt Slardar's channeling abilities upon cast.
  • Turns Slardar phased for the duration, allowing him to pass through other units and wards.
  • The river bonuses are applied when Slardar makes physical contact with the water of the river.
    • This means if he is moved out of it vertically, the bonuses are lost as well, until he lands back in the water.
    • The bonuses of the river do not linger at all.
    • The river bonuses are also applied when standing on a puddle created by Slardar's other abilities.
  • Grants a total of 40%/45%/50%/55% movement speed while active inside the river.
  • Multiple instances of the river bonus do not stack.

Slithereen Crush
Slithereen Crush icon.png
No Target
Slams the ground, stunning and damaging nearby enemy land units. After the stun, the affected units are slowed.
Cast Animation: 0.35+0.6
Effect Radius: 350 (With Aghanim's Shard 425)
Damage: 70/140/210/280 (Talent 220/290/360/430)
Move Speed Slow: 20%/25%/30%/35% (Talent 30%/35%/40%/45%)
Attack Speed Slow: 20/25/30/35 (Talent 30/35/40/45)
Stun Duration: 1
Slow Duration: 3/4/5/6
With Aghanim's Scepter Puddle Radius: 600
With Aghanim's Scepter Puddle Duration: 25
With Aghanim's Scepter Puddle Aura Linger Duration: 0.5
With Aghanim's Shard Corrosive Haze Duration: 5
Cooldown: 8 (Talent 4)
Mana: 90/100/110/120
Upgradable by Aghanim's Scepter.
Aghanim's Scepter Upgrade:
Whenever Slardar casts Slithereen Crush, he creates a puddle of water that is considered a river for movement and bonuses.
Upgradable by Aghanim's Shard.
Aghanim's Shard Upgrade:
Increases Slithereen Crush radius, and causes it to apply Corrosive Haze for a short time to units affected.
Not blocked by Linken's Sphere.
Upgradable by Aghanim's Scepter.
Corrosive Haze applied by Slithereen Crush is not blocked.
Modifiers [?]
Ability Draft Notes
Ability Draft Notes:
Upgradable by Aghanim's Shard.
Corrosive Haze must be drafted as well for it to get applied.
A swift crush of might and water breaks even the toughest of defenses.


  • The stun and slow are applied at the same time, so overall, the slow lasts for 4/5/6/7 seconds.
  • Slithereen Crush first applies the stun debuff, then the slow debuff, then the Corrosive Haze debuff, and then the damage.
  • With Aghanim's Scepter icon.png Aghanim's Scepter, the created puddles provide an aura which grants the caster the river bonuses.
    • Unlike the river, the puddles do not grant the bonuses to any other unit, not even the caster's illusions.
    • Also unlike the river, the river bonus from a puddle lingers for 0.5 seconds.
    • Multiple instances of the river bonus do not stack.
  • With Aghanim's Shard icon.png Aghanim's Shard, Corrosive Haze based on its current level gets applied to all enemies hit by Slithereen Crush.
    • Corrosive Haze notes fully apply. If it is not leveled, no debuff is applied.

Bash of the Deep
Bash of the Deep icon.png
After 3 attacks, your next attack will bash the target. Deals double damage against creeps.
Required Hits: 4
Damage: 50/100/150/200 (Talent 110/160/210/260)
Creep Damage Percentage: 200%
Stun Duration: 1/1.1/1.2/1.3
Disabled by Break.
Break Notes:
Prevents gaining new stacks.
Prevents the next attack from bashing when having enough stacks.
Modifiers [?]
Ability Draft Notes
Ability Draft Notes:
Fully stacks with the bash from Skull Basher icon.png Skull Basher and Abyssal Blade icon.png Abyssal Blade.
Thieves of the wealth of the Deep Ones meet the brutality of the Slithereen Guard in melee combat.


  • Each successful attack done on an enemy hero or creep adds one to the attack counting buff.
    • The buff is always present but is hidden at 0 charges.
  • Does not count attacks done against allies, wards or buildings, nor bashes them on the bashing attack.
  • The charges have no duration and last indefinitely.
  • When the charges reach 4, the bash is applied and the charges set back to 0.
  • The triggering attack first applies the debuff, then its own damage.
  • The bonus damage is dealt in one instance together with the attack damage, and counts as attack damage as well.
    • It can be lifestealed off of and cleave, but it is not considered by crit.
    • It is also not affected by percentage-based attack damage bonuses or reductions, but can be reduced with flat reductions.
    • Deals 100/200/300/400 (Talent 220/320/420/520) damage to non-hero units. Treats creep-heroes as creeps.

Corrosive Haze
Corrosive Haze icon.png
Reduces enemy armor to amplify physical damage and provides True Sight and vision of the targeted unit, revealing invisibility. The enemy unit leaves a trail of water behind it for 8 seconds.
Cast Animation: 0.3+0.67
Cast Range: 700/800/900
Puddle Radius: 100
Armor Reduction: 10/15/20 (Talent 14/19/24)
Debuff Duration: 18
Puddle Duration: 8
Puddle Aura Linger Duration: 0.5
Cooldown: 5
Mana: 25
Partially blocked by Linken's Sphere.
Blocked upon cast.
Upgradable by Aghanim's Shard.
Not blocked when applied by Slithereen Crush.
Modifiers [?]
modifier_slardar_amplify_damage (Talent)
Even the strongest armor counts for little when left to the brine of the sea.


  • With Aghanim's Scepter icon.png Aghanim's Scepter, the created puddles provide an aura which grants the caster the river bonuses.
    • Unlike the river, the puddles do not grant the bonuses to any other unit, not even the caster's illusions.
    • Also unlike the river, the river bonus from a puddle lingers for 0.5 seconds.
    • Multiple instances of the river bonus do not stack.
  • Creates puddles at the target's current location in 0.5-second intervals, starting immediately upon cast.
    • A puddle is only created if the previous puddles are more than 50 range away from the target's current location.
      • If there is a previous puddle within range, it gets its duration refreshed instead.
    • This means, despite the description, it does not create a continuous trail, and has gaps between the puddles depending on the target's speed.
  • Each created puddle has its own independent duration.
  • Multiple casts on the same target do not stack but refresh the duration.


Hero Talents
Corrosive Haze Undispellable25-4s Slithereen Crush Cooldown
-4 Corrosive Haze Armor20+150 Slithereen Crush Damage
+60 Bash Damage15+325 Health
+10% Slithereen Crush Attack/Move Slow10-3s Guardian Sprint Cooldown
  • The health talent increases maximum health capacity, and keeps the current health percentage.

Recent Changes[]

Main Article: Slardar/Changelogs
  • Reduced Guardian Sprint passive river movement speed bonus from 25% to 15%.
  • Corrosive Haze
    • Now creates a puddle trail behind the target as it moves which triggers Guardian Sprint's passive bonuses.
    • The trail consists of 100-radius puddles that are created in 0.5-second intervals and last for 8 seconds each.
  • Talent Talents:
Level 20 right talent: +125 Slithereen Crush damage increased to +150.
Level 20 right talent: +100 Slithereen Crush damage increased to +125.
  • Guardian Sprint
    • Increased active movement speed bonus from 16%/24%/32%/40% to 25%/30%/35%/40%.
    • Increased cooldown from 17 on each level to 32/27/22/17.
  • Rescaled Slithereen Crush damage from 80/140/200/260 to 70/140/210/280.
  • Talent Talents:
Level 10 left talent changed: +20 attack damage ➜ +10%/+10 Slithereen Crush movement/attack speed slow.
Level 10 right talent changed: +7 health regeneration ➜ -3s Guardian Sprint cooldown.
Level 20 right talent changed: 25% lifesteal ➜ +100 Slithereen Crush damage.

Recommended Items[]

Starting items:

  • Tango icon.png Tango provides health regeneration to combat harassment.
  • Healing Salve icon.png Healing Salve also restores health to Slardar.
  • Clarity icon.png Clarity replenishes his mana pool from casting Slithereen Crush. Being able to cast his stun more than twice in-lane gives him more opportunities to get kills against lane opponents, and thus more opportunities at gold and experience.
  • Iron Branch icon.png Iron Branch provides a boost to Slardar's attributes and builds into Magic Wand later on.

Early game:

  • Magic Stick icon.png Magic Stick gives cheap burst healing and mana, which can give Slardar more survivability or enough mana to cast Slithereen Crush one more time to secure a kill.
  • Boots of Speed icon.png Boots of Speed are absolutely crucial early on for any hero. In Slardar's case, it greatly improves the potency of Guardian Sprint, allowing him to more easily catch up to fleeing enemies or escape pursuers.
  • Helm of Iron Will icon.png Helm of Iron Will provides good sustain in lane and the extra armor makes you very survivable against physical damage in the early game. It builds directly into an Armlet of Mordiggian.

Mid game:

  • Magic Wand icon.png Magic Wand provides a cheap boost to Slardar's attributes and a quick burst heal. Use it to survive that last bit of damage or cast one last spell in a teamfight.
  • Power Treads icon.png Power Treads's attribute switching can give Slardar more strength for HP and base damage, or more intelligence so he can use more of his abilities.
  • Blink Dagger icon.png Blink Dagger is extremely powerful in Slardar's hands, as he can instantly get within range to cast Slithereen Crush. It should be considered a core item in all circumstances, and rushed if possible.
  • Armlet of Mordiggian (Inactive) icon.png Armlet of Mordiggian improves his attack speed, armor, and damage, while the HP regen keeps him topped up. The active gives him extra strength and damage, making him much tankier and making his attacks hit harder.

Late game:

  • Black King Bar icon.png Black King Bar allows Slardar to ignore enemy crowd control spells, greatly improving his ability to kill important targets in teamfights. It also provides bonus strength for more HP, and increased physical damage output.
  • Lotus Orb icon.png Lotus Orb gives Slardar a way to counter enemy target spells, allowing him to disable enemy supports or discourage them from focusing him. It also provides armor for tankiness, and HP and mana regen to allow him to roam independently.

Situational items:

  • Shadow Blade icon.png Shadow Blade is a strong initiating item that improves Slardar's physical DPS and allows him to roam invisibly for targets. Combining Guardian Sprint and Shadow Walk can allow Slardar to move at maximum movement speed while invisible, and allows him to deal backstab damage when attacking out of invisibility.
  • Echo Sabre icon.png Echo Sabre can be a very effective item on a ganking Slardar. The extra hp and mana/regen are welcome on a hero who wants both. The bonus attack speed and instant attack passive synergize very well with Bash of the Deep.
  • Heart of Tarrasque icon.png Heart of Tarrasque is the best survivability item in the game. Its raw HP and passive regeneration ability allow Slardar to stay in teamfights longer and recover from them faster.
  • Desolator icon.png Desolator is a relatively cheap item that provides increased bonus damage. Its attack modifier can reduce enemies' armor and synergizes with Corrosive Haze, allowing Slardar to shred enemies with his attacks.
  • Assault Cuirass icon.png Assault Cuirass improves Slardar's armor and attack speed, making him tankier and increasing his proc chance with Bash of the Deep. The aura gives allies more armor and attack speed as well, and the enemy armor reduction further reduces their physical damage resistance on top of Corrosive Haze.
  • Crimson Guard icon.png Crimson Guard provides Slardar with increased health, damage block and armor, drastically improving his tankiness and allowing him to shrug off most forms of physical damage. The active ability allows him to grant damage block and armor to all nearby teammates for a short time, increasing their survivability as well as his own.
  • Moon Shard icon.png Moon Shard greatly increases Slardar's attack speed, improving his physical damage output and a greater chance to proc Bash of the Deep. The Shade Sight passive also improves his night vision, allowing him to more easily spot targets while hunting in the darkness.
  • Bottle (Full) icon.png Bottle can be a good purchase on a roaming Slardar, as he can pick up runes while hunting for targets (both to refill the bottle and to utilize the runes for ganks). Slardar's small mana pool and being active in early ganks mean that he benefits from a source of HP and mana replenishment, particularly since he can treads switch to get more value out of it.
  • Urn of Shadows icon.png Urn of Shadows can be a useful early roaming item if Slardar intends to be very active in the early game. It provides strength for more HP and base damage, making him tankier and letting him hit harder, and provides a small amount of mana regen to help replenish his mana pool. As he can easily get charges from successful ganks, they can be used to heal Slardar after successful kills, and can add damage to future ganks.
  • Drum of Endurance icon.png Drum of Endurance provides Slardar with an array of useful bonuses. The attributes give Slardar more HP and mana, the latter of which is extremely helpful for allowing him to cast his spells, and the active provides movement and attack speed bonuses, both of which greatly help Slardar in combat.
  • Blade Mail icon.png Blade Mail gives Slardar many strong mid-game benefits that can fill in some of his deficiencies. The armor and damage make him a better fighter, and the active lets Slardar use his HP offensively during ganks, discouraging enemies from targeting him in teamfights.
  • Silver Edge icon.png Silver Edge can be upgraded from Shadow Blade, and greatly increases Slardar's ganking prowess. The Shadow Walk backstab damage is increased, and the break can disable enemy passives that may be preventing Slardar from easily killing certain enemies. It also provides a nice boost to Slardar's stats.
  • Monkey King Bar icon.png Monkey King Bar greatly increases Slardar's physical damage and gives him additional magical procs to hit enemies with evasion and high armor to negate Corrosive Haze.
  • Eye of Skadi icon.png Eye of Skadi gives Slardar attributes across the board, making him much tankier and alleviating his mana issues. The attack modifier lets Slardar slow enemies with his attacks, further reducing their ability to escape him.
  • Mjollnir icon.png Mjollnir is a useful attack speed utility item that greatly increases Slardar's chances to proc his Bash of the Deep; as well, the Chain Lightning modifier allows him to deal magic damage around him with his attacks, giving him creep wave clearing capability and augmenting his damage output if he manages to land Slithereen Crush on multiple enemy heroes. Static Charge can further increase his damage output, discouraging enemies from focusing him for fear of proccing the discharge.
  • Satanic icon.png Satanic can greatly increase Slardar's survivability through a combination of factors. It provides high strength, making Slardar much tankier, and bonus damage to further give him more damage output. The lifesteal allows Slardar to maintain his HP, even in the midst of battle, as he can cast Corrosive Haze to increase the amount of damage dealt (and thus the amount he regenerates through lifesteal), and he can use the active to fully recover his HP in just a few attacks as well.






  • In DotA, Corrosive Haze was auto-castable.
  • With the 7.00 gameplay update, three of Slardar's abilities have been renamed: Sprint to Guardian Sprint, Bash to Bash of the Deep, and Amplify Damage to Corrosive Haze.
  • Slardar's voice lines ▶️ "That is not dead that can eternal lie." and ▶️ "And with strange aeons even death may die." are direct quotes from H. P. Lovecraft's short story The Nameless City.
  • Another Lovecraft story, The Shadow over Innsmouth is also referred several times in Slardar's backstory and voice files with mentions to "The Old Ones" and "The Deep Ones".
  • Slardar's model is based on the Naga from the Warcraft franchise.