Assign each pile to a different one of those attacking creatures at random
Set: Champions of Kamigawa Type: Legendary Creature — Spirit Rarity: Rare Cost: {5}{B}{B}{B} Myojin of Night's Reach enters the battlefield with a divinity counter on it if you cast it from your hand
Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters
Set: Commander 2016 Type: Creature — Elf Shaman Rarity: Uncommon Cost: {B}{G} {1}{B}{G}: Target creature gets +1/+1 and gains intimidate until end of turn
(A source with wither deals damage to creatures in the form of -1/-1 counters
Mary O'Kill [Unstable] Moag Assign each pile to aSet: Unstable Type: Legendary Creature Human Villain Rarity: Rare Cost: {5}{B R} {1}{B R}: Switch a Killbot or Mary O'Kill in your hand with one on the battlefield. (If a creature is tapped, the switched creature is tapped. The same is true for untapped, attacking, blocking, enchanted, equipped, and targeted. Any counters on a creature are on the switched creature instead.)