Mental Vapors GTC/72

Set: Gatecrash
Collector Code: GTC/72
Finish: Regular

Name: Mental Vapors
Type: Sorcery
Oracle text: Target player discards a card. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)