Akroan Hoplite

The math rewards going wide, which is exactly the kind of payoff a Boros aggro deck wants and rarely gets at two mana. Left alone, the body is a 1/2: harmless on defense, irrelevant in a vacuum. But the attack trigger scales with the board, counting every attacking creature you control including itself, so a full swing turns it into the largest thing on the table. Three other attackers make it a 5/2; five make it a 7/2. The design ties its size to commitment: it only grows when you go all-in, and it shrinks back to nothing the moment you hold creatures home to block. That conditionality is the cost of the curve slot. The toughness never moves, so the hoplite stays fragile to anything that pings two, and a single chump or removal spell on the right turn deflates the whole threat. What it asks for is a wide red-white aggro shell where the attack step is a foregone conclusion rather than a negotiation, the same go-wide logic that animates anthem effects and convoke, expressed as a single creature that pays you for filling the board. In a deck that never wants to play defense, the lack of evasion and the static body are concessions you were happy to make anyway.