Derelict Attic // Widow's Walk - Duskmourn: House of Horror - 93

Enchantment — Room

Mana Cost: {3}{B}

Whenever a creature you control attacks alone, it gets +1/+0 and gains deathtouch 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.)

Common · Duskmourn: House of Horror · #93 (DSK)

Illustrated by Marc Simonetti