Painter's Studio // Defaced Gallery

Painter's Studio When you unlock this door, exile the top two cards of your library. You may play them until the end of your next turn. / Defaced Gallery Whenever you attack, attacking creatures you control get +1/+0 until end of turn.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it)