Mox Opal [Scars of Mirrodin] Bird They don't untap during their

They don't untap during their controller's next untap step

or the smell

Set: Pro Tour Promos Type: Creature — Avatar Rarity: Rare Cost: {6}{B}{B} If there are ten or more creature cards total in all graveyards

Set: Unlimited Edition Type: Creature — Human Assassin Rarity: Rare Cost: {1}{B}{B} {T}: Destroy target tapped creature

Set: Unlimited Edition Type: Enchantment Rarity: Rare Cost: {3}{R} Whenever a player taps a land for mana

Mox Opal [Scars of Mirrodin] Bird They don't untap during theirSet: Scars of Mirrodin 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.