Mishra's War Machine

Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking/being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by/is blocking.)

At the beginning of your upkeep, Mishra's War Machine deals 3 damage to you unless you discard a card. If Mishra's War Machine deals damage to you this way, tap it.