Contagion Engine [Scars of Mirrodin] Limited You don't ask why a

You don't ask why a plague spreads or a field burns

Set: Sun & Moon: Cosmic Eclipse Type: Water Rarity: Secret Rare Retreat cost: 0

If it's December

Set: Skyridge Type: Darkness Rarity: Holo Rare Retreat cost: Colorless

Set: HeartGold & SoulSilver: Base Set Type: Item Rarity: Promo

Contagion Engine [Scars of Mirrodin] Limited You don't ask why aSet: Scars of Mirrodin Type: Artifact Rarity: Rare Cost: {6} When Contagion Engine enters the battlefield, put a 1 1 counter on each creature target player controls. {4}, {T}: Proliferate, then proliferate again. (Choose any number of permanents and or players, then give each another counter of each kind already there. Then do it again.)