Rubick/Spell Steal Interactions

Rubick's Spell Steal has some complex interactions, specifically on spells that have direct synergy with another component of the hero's arsenal. Any spells that have unique interactions with Rubick are detailed here, otherwise they function as expected.

General interaction

 * Rubick cannot steal passives, UAMs or the spells of non-hero units, such as illusions and summons unless stated otherwise.
 * Any abilities that create illusions will create illusions of Rubick, not of the original hero.
 * If Rubick steals and casts a spell, then steals another and resteals the original, the cooldown on the spell will be reset.
 * If Rubick steals the same spell as he already has, the spell will not update with current information about cooldown, level or secondary passives.
 * If the target enemy Hero has Aghanim's Scepter icon.png Aghanim's Scepter, Rubick will not steal the upgraded version of the spell. An Aghanim's Scepter icon.png Aghanim's Scepter held by Rubick will upgrade a stolen spell regardless of whether the original owner has it or not.
 * Summoned or dominated units with a limited duration will not be killed on stealing another spell.
 * Summoned or dominated units with an unlimited duration will be killed on stealing another spell unless stated otherwise.
 * Toggling spells can be stolen, but only if toggling them on was the most recent action. Toggling them off does not count as casting the spell.
 * The effects of toggling spells will be lost on stealing another unless stated otherwise.
 * Rubick has no cast animation on any stolen spell, allowing them to be cast instantaneously, although spells with an extended animation, like or  are not shortened.

Interaction with transformation spells
Multiple transformation spells can be stolen, and will stack with each other.


 * Rubick can steal Undying's Flesh Golem icon.png Flesh Golem, Lycanthrope's Shapeshift icon.png Shapeshift, Lone Druid's True Form icon.png True Form, Dragon Knight's Elder Dragon Form icon.png Elder Dragon Form, Brewmaster's Primal Split icon.png Primal Split, and Terrorblade's Metamorphosis icon.png Metamorphosis.
 * With the exception of Primal Split, Rubick can still cast and steal as usual while transformed.
 * If more than one of these are active, he will take the visual form of the most recently cast spell.
 * Any illusion abilities cast while any combination of transformations spells are active will be copies of the current form, including any relevant buffs.
 * Upon the duration of a transformation spell ending, he will return to the next most recent buff.
 * If both True Form and Elder Dragon Form are active, attacks will remain melee range.
 * If Flak Cannon icon.png Flak Cannon or Split Shot icon.png Split Shot are used while in True Form, his base attack range will stay melee, but the effective range of the abilities will stay the same.
 * If Flak Cannon or Split Shot are used while in Elder Dragon Form, the secondary attacks will show the dragon form projectile, but will not apply the attack modifier.
 * If Alchemist's Chemical Rage icon.png Chemical Rage is activated during either Shapeshift or True Form, BAT reductions will not stack, instead BAT is reduced to the lowest of the buffs.
 * If Primal Split is cast while Shapeshift is active, all Brewlings will remain at max movespeed for the duration of Shapeshift, but they will not get the decreased BAT nor the critical strike.
 * If Primal Split is cast while Flesh Golem is active, Plague Aura will be applied to the Earth Spirit.