Thought Prison | 261 | Mirrodin

Set: Mirrodin
Rarity: U
#: 261
Creature Type or Sub Type: Artifact
Rules Text Contains: Imprint — When Thought Prison comes into play, you may have target player reveal his or her hand. If you do, choose a nonland card from it and remove that card from the game. (The removed card is imprinted on this artifact.)
Whenever a player plays a spell that shares a color or converted mana cost with the imprinted card, Thought Prison deals 2 damage to that player.