Which hero's signature spell is 'Spell Steal'?

Which hero's signature spell is “Spell Steal”? The answer is Rubick. Spell Steal is Rubick’s iconic ultimate ability, allowing the Grand Magus to take an ability from an opposing hero and use that stolen magic against the enemy team.

The spell captures Rubick’s central character concept: he is a powerful mage who studies and appropriates the magic of others rather than relying only on a fixed personal arsenal. In gameplay, his effectiveness depends heavily on the enemy lineup, because different opponents provide different spells to steal. A well-chosen stolen ability can give Rubick damage, crowd control, mobility, or defensive utility.

The distractor answers reflect other spell-focused heroes. Silencer is associated with Global Silence, Puck with Illusory Orb and Dream Coil, and Invoker with his large collection of invoked spells. Rubick does have other important abilities, including Telekinesis and Fade Bolt, but Spell Steal is the defining signature that most clearly identifies him.