Fireflux Squad

Sneak Attack for the whole board, paid in combat math instead of mana. The mechanism that makes it hum is timing: the ability fires when this creature attacks, during the Declare Attackers step, before either player has declared blockers. You exile one of your own already-declared attackers and dig until you hit a creature, which enters tapped and attacking, joining the same combat with summoning sickness sidestepped entirely. Two tensions carry the design. The first is that the fuel is one of your own attackers, so the ideal input is a body whose value lives in the swing rather than the survival: a token, a small evasive threat, anything you would gladly upgrade. The second is the reveal, which pushes deckbuilding toward a top-heavy creature curve so the dig reliably lands something bigger than what you traded; every noncreature card turned up goes to the bottom of your library in random order, quietly scattering anything you had been sculpting on top. The payoff is fundamentally a size upgrade mid-combat: turn a 1/1 into whatever monster sits deepest in your deck, already in the red zone, and force the defender to reckon with it before blocks. The 4/3 haste body means it wants to attack the turn it lands, and the trigger asks you to have committed something else to the attack alongside it, so the card rewards a wide board over a tall one.