Thought Prison (MRD) #261 [EN/N] s/o

{5} · Artifact · Imprint — When this artifact enters, you may have target player reveal their hand. If you do, choose a nonland card from it and exile that card. Whenever a player casts a spell that shares a color or mana value with the exiled card, this artifact deals 2 damage to that player. · Illustrated by Glen Angus · Mirrodin #261 · EDHREC rank 23151 · Magic: The Gathering, MTG