Akoum Hellhound

A 0/1 at rest, a 2/3 the moment a land arrives. That trade is the whole conceit of red's landfall aggressor: the card is priced as though it does nothing, because on a turn you have no land to play, it does exactly that. Feed it a land drop and the +2/+2 turns an inert body into a real clock, and a build running fetch-style lands or extra-land effects can fire the trigger twice in a turn for a bigger swing. The balancing act sits between the ceiling and the cost of setup. The bonus fades at cleanup, meaning it has to be spent in the combat step it appears in; a turn without a land entering leaves the creature stranded on defense, unable to block profitably. This is the recurring shape of the cheap red beater built around land drops: on the board turn one, dangerous only when the deck keeps lands coming, and dead weight in a hand that has run dry. What separates the playable versions from the filler is entirely how reliably the deck chains land drops into combat, not anything printed on the creature itself.