First printed in Mirrodin (2003)
Thought Prison 
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.
Legality
- Legal in
- Modern, Legacy, Vintage, Commander, Duel Commander, PreDH, Oathbreaker
- Not legal in
- Standard, Pioneer, Pauper, Future Standard, Historic, Timeless, Alchemy, Penny Dreadful, Premodern, Old School 93/94, Gladiator, Pauper Commander, Tiny Leaders, Brawl, Standard Brawl, Competitive Brawl
MTGO price: 0.003 TIX, the cheapest non-foil print (average sell price on GoatBots, 28 Oct 2026).
