Peerless Samurai

The attack-alone clause points this card at a very specific style of aggression: not the go-wide swarm most tribal decks want, but the lone runner. Menace on this 2/3 body is the enabler, not the payoff. Because a menace attacker forces gang-blocking, it dodges the single chump that would otherwise pick it off, which means you can send it in by itself into a board that would otherwise punish a solo swing, and attacking alone is exactly what the second ability wants. The rebate fires during the declare attackers step: the moment a Samurai or Warrior is the only creature you send in, the discount lands, before blockers are declared and regardless of whether any damage connects. That places the trigger inside the combat phase, so the discounted spell has to be cast after attackers are on the table, a combat trick to push the runner through, a second threat, or removal to clear a would-be blocker. The Samurai-and-Warrior clause folds the card into the lineage of designs that prize the solitary duelist, where a single attacker is the intended shape rather than an accident of a stalled board. The discount is capped at one spell and gated behind that specific combat pattern, so it functions less as a permanent engine than as a nudge toward a particular way of playing red: fewer, better attackers, sent in one at a time.