Mishra's Factory (George Baxter) [Pro Tour Collector Set] XY22 while it has no Xyz

while it has no Xyz Materials: Destroy this card

Set: Oath of the Gatewatch Prerelease Promos Type: Creature — Eldrazi Rarity: Rare Cost: {6}{C} ({C} represents colorless mana

Whenever Zur the Enchanter attacks

Set: Beta Edition Type: Artifact Rarity: Rare Cost: {4} {2}

Set: Tenth Edition Type: Creature — Rat Rarity: Uncommon Cost: {1}{B}{B} Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats

Mishra's Factory (George Baxter) [Pro Tour Collector Set] XY22 while it has no XyzSet: 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.