Cast range

“

▶️ No sorcery lies beyond my grasp. — Rubick

”

Cast range ( $c$ ) is the distance at which a hero may use an ability on its target. Casting an ability beyond its cast range will cause the hero to move within the cast range, and cast the ability.

Cast range can be increased by certain abilities and certain specific talents. There are currently no talents that increases a heroes' basic cast range.

Collision Size Bonus Range

An ability's maximum or actual cast range is dependent on the hero's collision size and the ability's targeting type.

No Target

Abilities with the no target requirement are immediately cast as soon as its button is pressed. Many of these abilities do not have a cast time. They cannot directly target a unit or a point. Same goes for abilities that can be toggled On / Off. Therefore, only flat cast range bonuses are counted and collision size is not.

The cast range for no-target abilities is defined as:

$c=c_{b}+\sum _{i=1}^{n}c_{i}$

With cb being the ability's base cast range and ci the cast range bonus sources.

Vector Targeting

Cast range bonuses increases all vector targeting ability's cast range as usual, using the same formula as above, but not area of effect.

Target Area

See also: Area of Effect Increasing

Cast range bonuses increases all area-targeted ability's cast range as usual, using the same formula as above, but not area of effect.

Target Unit

See also: Attack Range

Target unit abilities require the caster to directly target a unit, and cannot be used on the ground. The actual range at which a unit-targeted ability (or attack) is able to cast is a little further than the value shown due to having a motion buffer range, which is 250 range. This means that if a unit moves out of cast range, but is still within 250 range more than the ability's cast range when the ability's cast point completes, the unit-targeted ability will be cast.

Unit targeted abilities also considers the range from the caster's edge to the target's edge, based on the collision size of the caster and the target.

The cast range for unit-targeted abilities is defined as:

$max\{c\}=c_{b}+\sum _{i=1}^{n}c_{i}+{col}_{s}+{col}_{t}+250$

With cb being the ability's base cast range, ci the cast range bonus sources, cols the collision size of the caster and colt the collision size of the target.

Motion Buffer

When the cast range between the caster and the target exceeds the default cast range during the cast animation, the motion buffer range allows the ability to still be cast. For most unit-targeted abilities, the default motion range buffer is 250. In other words, for unit-targeted abilities, the target has to move at least 251 range away in order for the ability to be canceled.

If the targeted unit is out of the motion buffer range, the ability will be cast once the target and/or the caster moves within the default range.

The following abilities have different motion buffer range values from the default value:

Abilities with Different Motion Buffer Range

• Sniper - Assassinate
  
  Motion Buffer Range: 600
  
• Spirit Breaker - Nether Strike
  
  Motion Buffer Range: 500
  

Example

Luna casting Lucent Beam on an enemy Abaddon, what is the maximum cast range of Lucent Beam in this example?

Cast range values:

• Lucent Beam: 800

Collision size values:

• Luna: 24
• Abaddon: 24

$max\{c\}=800+\underbrace {(24+24)} _{\text{Collision Size}}+\underbrace {(250)} _{\text{Buffer}}=1098$

Lucent Beam's actual cast range in this example is 1098, instead of 800.

Target Point

Point-target abilities require the caster to target a point or an area. For point-targeted abilities, both flat cast range bonuses and the range from the caster's edge to the target's edge, based on the collision size of the caster and the target is considered, but not the motion buffer range.

The cast range for point-targeted abilities is defined as:

$max\{c\}=c_{b}+\sum _{i=1}^{n}c_{i}+{col}_{s}$

Example

Morphling is casting Waveform, what is the maximum cast range for Waveform?

Cast range values:

• Level 4 Waveform: 1000

Collision size values:

• Morphling: 24

$max\{c\}=1000+24=1024$

Waveform has a maximum 1024 cast range in this example.

Attack Modifiers

All active attack modifier-based abilities' cast range is based on the caster's attack range. The cast range can be further increased by other attack range bonuses. However, it is not affected by cast range bonuses.

Some of these abilities have different cast range depending on the situation, the ability uses the ability's cast range when cast manually with Hotkey and it uses the caster's attack range while Autocast is active.

• Ancient Apparition – Chilling Touch
• Clinkz – Searing Arrows
• Doom – Infernal Blade³
• Drow Ranger – Frost Arrows
• Enchantress – Impetus
• Hoodwink – Acorn Shot⁵
• Huskar – Burning Spear⁴
• Jakiro – Liquid Fire⁴
• Jakiro – Liquid Frost^{2 4}
• Kunkka – Tidebringer³
• Outworld Destroyer – Arcane Orb
• Silencer – Glaives of Wisdom
• Snapfire – Lil' Shredder
• Tusk – Walrus PUNCH!³
• Viper – Poison Attack
• Windranger – Focus Fire

¹ Requires Aghanim's Scepter.

² Requires Aghanim's Shard.

³ Can be further increased by other melee attack range bonuses (e.g. Penta-Edged Sword).

⁴ Uses caster's attack range while Autocast is active, and uses cast range while manually cast.

⁵ Can be further increased by both attack range bonuses and cast range bonuses.

Other Cast Range Bonuses

Some abilities have different cast range or provides cast range bonus in specific conditions.

Other Cast Range Bonuses

• Dragon Knight - Elder Dragon Form
  
  Dragon Tail Cast Range Bonus: 400
  Fireball Cast Range Bonus: 1400
  While in Dragon Form, Dragon Tail and Fireball has 550 and 2000 cast range respectively.
• Earth Spirit - Boulder Smash
  
  Unit Cast Range: 150
  Stone Cast Range: 200
  Stone Knockback Distance: 2000
  Has 150 cast range when smashing a unit. Has a cast range equal to the stone knockback distance when smashing a Stone Remnant within a 200 radius, or 200 when targeting a Stone Remnant further away.
• Earth Spirit - Enchant Remnant
  
  Cast Range (Ally/Self): 175
  Cast Range (Enemy): 500
  
• Nyx Assassin - Impale
  

  
  Cast Range: 700 ( 1225)
  Spikes Travel Distance: 700 ( 1225)
  Increases cast range and travel distance while Burrowed.
• Nyx Assassin - Mana Burn
  

  
  Cast Range: 600 ( 1050)
  Increases cast range while Burrowed.
• Force Staff - Force
  
  Cast Range (Ally/Self): 550
  Cast Range (Enemy): 850
  
• Hurricane Pike - Hurricane Thrust
  
  Cast Range (Ally/Self): 650
  Cast Range (Enemy): 450
  Push Distance (Ally/Self): 600
  Push Distance (Enemy): 450
  

Cast Range Granting Abilities

For a list of special interactions with cast range increases, see Cast Range Interactions.

Bonuses

Cast Range Bonus Sources

• Keeper of the Light - Spirit Form
  
  Bonus Cast Range: 125/250/375
  
• Rubick - Arcane Supremacy
  
  Bonus Cast Range: 100/150/200/250
  Passive.
• Aether Lens - Aethereal Focus
  
  Bonus Cast Range: 225
  Cast range bonus does not stack with Aether Lens-based items.
• Keen Optic
  
  Bonus Cast Range: 75
  Passive.
• Octarine Core
  
  Bonus Cast Range: 225
  Cast range bonus does not stack with Aether Lens-based items.
• Seer Stone
  
  Bonus Cast Range: 350
  Passive.
• Psychic Headband
  
  Bonus Cast Range: 100
  Passive.
• Telescope - Prescient Aura
  
  Bonus Cast Range: 100
  Radius: 1200
  The effects is provided by an aura, affects self and nearby allies. The buff lingers for 0.5 seconds.

Talents

The following heroes have talents that increase the cast range of specific abilities:

Specific Cast Range Increasing Talents

• Arc Warden - Talent by Level 10 Right
  
  +175 Flux Cast Range:
  
• Bloodseeker - Talent by Level 20 Right
  
  +475 Rupture Cast Range:
  
• Earthshaker - Talent by Level 20 Left
  
  +320 Fissure Range:
  
• Grimstroke - Talent by Level 20 Right
  
  +1000 Stroke of Fate Cast Range:
  
• Lion - Talent by Level 25 Right
  
  +800 Earth Spike Range:
  
• Monkey King - Talent by Level 15 Right
  
  +450 Tree Dance Cast Range:
  
• Morphling - Talent by Level 10 Left
  
  +250 Waveform Range:
  
• Phoenix - Talent by Level 25 Left
  
  +1000 Icarus Dive Cast Range:
  
• Timbersaw - Talent by Level 25 Left
  
  +1125 Timber Chain Range:
  

Reductions

The following abilities reduces the affected target's cast range by a percentage.

Cast Range Reduction Sources

• Bane – Enfeeble
• Tinker – Warp Flare

Patch History

Patch

Description

08 Aug 2019

• Hovering over a unit's portrait now displays a range finder for their current vision range.
• Ability ranges are now shown when hovering over enemy hero abilities (shows the values for the max level ranges).
• Fixed some cases where the cast range range-finder wouldn't match the actual cast range (i.e. Earth Spike).

Mechanics Main Stats Armor Attributes ( Strength / Agility / Intelligence) Health & Mana (HP Regen & MP Regen) Magic Resistance Movement Speed Status Resistance Turn Rate Misc Collision Size Gib Type / Shades Legs Vision Abilities Type Active / Passive / Autocast Aura Accuracy / Evasion Channeling Damage Block / Magic Damage Barrier Damage Manipulation Damage Over Time Talents Teleport Targeting Area No Target Point Unit Vector Combinations Casting Cast Range / Motion Buffer Cast Animation (Cast Point + Backswing) Cooldown Reduction (Flat / Current Flat / Percentage) Reset Charge-based Attack Damage Attack Damage Instant Attack Heroes Attack Classes Attack Range (Acquisition Range) Attack Speed (BAT / Interval) Damage Types (Physical / Magical / Pure / Instant Kill) Flags (HP Removal / No-reflection) Projectile Speed Spell Damage (Outgoing / Incoming) Modifiers Bash Cleave / Splash Corruption Critical Strike Lifesteal / Spell Lifesteal Mana Break On-hit Effects Animation Definition Orb Walking Status Effects Disables Cyclone Disabling Orders Forced Movement (Knockback) / Upward Movement Fear Hide Hex Hypnosis Root Leash Stun Sleep Taunt Movement Move Speed Slow Flying Movement Phased / Tree Walk / Unobstructed Movement Other Attack Immune Attack Speed Slow Spell Immunity Invulnerability Invisibility Blind Break Disarm Ethereal Silence Mute Trap Items Mechanics Sharing / Selling Disassemble Recipes Neutral Item Drop