Mishra's Factory (Shawn "Hammer" Regnier) [Pro Tour Collector Set] Grand Prix Promos it can't be regenerated this

it can't be regenerated this turn

you may change Eldrazi Mimic's base power and toughness to that creature's power and toughness until end of turn

if Tombstone Stairwell is on the battlefield

Set: Shards of Alara Type: Artifact Creature — Human Cleric Rarity: Rare Cost: {1}{W} Each player who has cast a nonartifact spell this turn can't cast additional nonartifact spells

Set: New Phyrexia Type: Sorcery Rarity: Common Cost: {U/P} ({U/P} can be paid with either {U} or 2 life

Mishra's Factory (Shawn "Hammer" Regnier) [Pro Tour Collector Set] Grand Prix Promos it can't be regenerated thisSet: Pro Tour Collector Set Type: Land Rarity: Uncommon {T}: Add {C}. {1}: Mishra's Factory becomes a 2 2 Assembly Worker artifact creature until end of turn. It's still a land. {T}: Target Assembly Worker creature gets +1 +1 until end of turn.