Mox Opal [Double Masters] MicroProse Promos sacrifice Contamination unless you sacrifice

sacrifice Contamination unless you sacrifice a creature

Prevent all damage that would be dealt to him this turn

Set: Antiquities Type: Land — Urza's Mine Rarity: Uncommon {T}: Add {C}

Set: Happy Holidays Type: Sorcery Rarity: Mythic Cost: {1}{R} Target creature you control climbs into Goblin Sleigh Ride

a supposedly sleeping Zhou Yu allowed his old friend

Mox Opal [Double Masters] MicroProse Promos sacrifice Contamination unless you sacrificeSet: Double Masters Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft {T}: Add one mana of any color. Activate only if you control three or more artifacts. The suns of Mirrodin have shone upon perfection only once.