Rampaging Rendhorn

Riot took the flattest slot in green (the big beater that just sat there and swung a turn late) and folded a decision into the point it enters the battlefield. This Beast is the mechanic at its plainest: a 4/4 for five that asks whether you would rather press the tempo now or the board later. Haste makes it an immediate four-power swing, punishing an open board or racing an aggressor before blockers arrive; the +1/+1 counter makes it a 5/5 that trades up and survives more of the removal aimed at it. The choice is locked in on the way in, so the read happens under pressure: you are guessing at the opponent's next turn before you see it, not adjusting after. That front-loaded modality is what riot lives on, and a body at this cost sits at its fulcrum, big enough that the haste line threatens real lethal math and durable enough that the counter line matters against a slower shell. The 4/4 does no work by itself; the interest lives entirely in the branch, and in how reliably the correct branch flips depending on who is ahead. Its value is not ceiling but the absence of a floor: two reasonable modes stapled to a fair rate, with the game state casting the deciding vote at the one moment you have to commit.