Tuskeri Firewalker

Red's oldest structural problem is that it empties its hand before the opponent empties their life total, and the color pie forbids the obvious fix: raw card draw belongs to blue. Boast is the workaround. The ability only fires on turns this creature swung, and only once, gating the advantage behind the exact behavior red already wants to reward. The one-generic cost is trivial enough that a deck happy to trade its early drops keeps finding gas long after its opening hand would have run dry. The exile-and-play-this-turn restriction is what keeps this from being disguised card advantage: what you dig into never sits in hand as stored value, it demands immediate mana and tempo or it vanishes. That use-it-or-lose-it wrinkle converts unspent mana late in a race into a fresh threat without ever asking the attacker to slow down, because the option only appears on turns you were already committing bodies to combat. The 3/2 body wants to attack regardless, so the boast is pure upside paid for by doing the thing the card was designed to do. It grants red the resource-refill it has always coveted while never letting the deck buy that refill with anything other than aggression.