Case of the Market Melee

Alchemy: Murders at Karlov Manor (YMKM) #13 · Uncommon · Enchantment — Case

Mana cost: {1}{R}

When this Case enters, it deals 1 damage to any target.
Damage isn't removed from creatures during cleanup steps.
To solve — Three or more creatures are damaged.
Solved — Whenever you attack with one or more creatures, this Case deals that much damage divided as you choose among any number of targets.