Soltari Guerrillas
Most shadow creatures are content to be unblockable beaters; this one repurposes its guaranteed connection into a removal engine. The activation redirects the next chunk of combat damage from the defending player to a creature instead, and because shadow keeps the attack landing every turn the board lacks another shadow body, that redirection is effectively three damage to a creature of your choice on every unimpeded swing. The free cost is the elegant part: there is no resource friction at all, so the only constraint is that the damage must come from combat. That coupling ties the removal to the attack step rather than letting it fire at instant speed, which keeps an otherwise-repeatable pinger honest by tethering it to the sorcery-paced rhythm of declaring attackers. The redirection only protects the act of attacking, never the body: a 3/2 dies to burn, targeted removal, and any of the usual answers exactly as fast as any other 3/2 would, so the engine runs only as long as the opponent declines to spend a card on it. The Soltari cycle in Tempest paired shadow with a per-color-pair twist, and this Boros entry's twist is precisely that combat-damage valve, turning evasion into a slow, attrition-grinding way to clear small blockers and threaten larger threats across multiple turns. Pricing the redirection at zero is what lets the loop stay worth running beyond the novelty of the keyword; the fragile body is what stops it from running away with a game.

