Isshin, Two Heavens as One

The doubler that reaches into an entire category rather than one named effect. Combat-declaration triggers had lived scattered across the game: the "whenever this attacks" line on individual creatures, exert payoffs that fire on the swing, and the board-wide watchers that read "whenever a creature you control attacks" to mint a Goblin or a Soldier. What ties them together is that all fire on the same event, the declaration of attackers, and no permanent had ever treated that event as an axis worth building around. The wording is precise about what qualifies: it does not care whether the trigger belongs to the attacker or to some other permanent you control, only that a creature attacking is what caused the ability to trigger. That deliberately excludes abilities that merely check whether you attacked (a raid payoff resolving on entry, an end-step look-back); those are not caused by the act of attacking, so this leaves them at their normal count. The scope folds two design spaces that used to be evaluated apart, the self-buffing attacker and the "on combat" board engine, into a single deck-building resource. The body is a modest 3/4: it dies to any real sweeper you might cast alongside it and only shrugs off the two- and three-damage mini-wraths, so the card is a payoff you protect rather than a threat that protects itself. What made attack triggers individually small (one token, one counter, one card) was precisely that doubling them was never a lever anyone could pull until now.