Helm of Chatzuk
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: Target creature gains banding until end of turn. (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 a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)
Illustrated by Mark Tedin
This printing
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If a creature with banding attacks, it can team up with any number of other attacking creatures with banding (and up to one nonbanding creature) and attack as a unit called a "band." The band can be blocked by any creature that could block a single creature in the band. Blocking any creature in a band blocks the entire band. If a creature with banding is blocked, the attacking player chooses how the blockers' damage is assigned.
Creatures in the same band must all attack the same player or planeswalker.
A maximum of one nonbanding creature can join an attacking band no matter how many creatures with banding are in it.
If a creature in combat has banding, its controller assigns damage for creatures blocking or blocked by it.
