Author of Shadows C21/35

Set: Commander 2021
Collector Code: C21/35
Finish: Regular

Name: Author of Shadows
Type: Creature — Shade Warlock
Oracle text: When this creature enters, exile all opponents' graveyards. Choose a nonland card exiled this way. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.