Name: Thought Prison Cost: 5 CMC: 5 Color: CID: Type: Artifact Rules Text: 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. Set/Rarity: Mirrodin uncommon Set Code: MRD-U Legality: Legal in vintage, Legal in predh, Legal in modern, Legal in oathbreaker, Legal in legacy, Legal in duel, Legal in commander Price: $0.20 Foil price: $0.94