Tombstone Stairwell [Mirage] Urza's Tower the Wall of Opposition is

the Wall of Opposition is but an illusion

giving each the knack of the other

Level up only as a sorcery

At the beginning of the upkeep of enchanted creature's controller

−4: Creatures you control get +3/+3 and gain trample until end of turn

Tombstone Stairwell [Mirage] Urza's Tower the Wall of Opposition isSet: Mirage Type: World Enchantment Rarity: Rare Cost: {2}{B}{B} Cumulative upkeep {1}{B} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) At the beginning of each upkeep, if Tombstone Stairwell is on the battlefield, each player creates a 2 2 black Zombie creature token with haste named Tombspawn for each creature card in their graveyard. At the