(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.) When you unlock this door, destroy all creatures with power 3 or greater.
Artist: Antonio José Manzanedo
Lecture Hall{5}{U}{U}
Enchantment — Room
(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.) Other permanents you control have hexproof.