Breach X

How Breach works

Breach rewards winning battles: when this Unit's attack destroys an enemy Unit, it immediately deals the listed amount of damage to the first (topmost) card in that opponent's shield area. You get shield pressure and a board trade from the same attack — the two things aggressive decks want most.

The trigger is specifically your attack destroying an enemy Unit. Attacking shields directly doesn't trigger Breach; there was no Unit destroyed.

Rulings & edge cases

Breach damage is effect damage, not battle damage — the official FAQs are explicit about this. That cuts both ways: protection effects that only stop battle damage (or damage from Units of a certain level) don't stop Breach, and a Base sitting in the shield area can be hit by Breach damage even when other effects shield it from Unit attacks.

Conditionally granted keywords are live checks: in one official ruling, a Unit whose AP was raised to meet a 'gains <Breach>' condition lost the keyword when an opponent's Command lowered its AP again mid-turn. If the condition lapses before the attack resolves, the Breach never happens.

Playing with and against it

Breach punishes chump-blocking: every small Unit thrown in front of a Breach attacker converts into shield damage anyway. Defensively, either block with Units that survive the battle, or remove Breach attackers before combat — once the battle is lost, the shield damage is already locked in.