Robar del éter
Gain control of target spell. You may choose new targets for it. (If that spell becomes a permanent, it enters the battlefield under your control.)
You may change any or none of the spell’s targets. If you change a target, you must choose a legal target for the spell. If you can’t, you must leave the target unchanged (even if the current target is illegal). Notably, if you were originally chosen as a “target opponent” for a spell you gain control with Aethersnatch, you are now an illegal target as you aren’t your own opponent.
If you gain control of a commander spell, the commander’s owner chooses whether to put it in the command zone if it later leaves the battlefield.
Aethersnatch can target any spell, even one without targets.