Screamer-Killer

A Bio-Titan reimagined as a payoff for the top of your curve. Most red beaters ask you to attack to matter; this one turns each expensive creature spell into a repeatable five to the face or the board, and because the trigger keys off the cast rather than the body, the reward arrives before the creature resolves, before it enters, at the moment you commit the mana. That timing quietly rewires how a heavy-creature deck sequences: the five-drops and up that would normally be liabilities in a red shell become burn-plus-permanent, and even if an opponent counters the fat spell, the scream has already fired (only a Stifle-style effect aimed at the trigger itself stops the damage). The trample on the 5/5 frame is almost an afterthought next to a five-damage bolt that goes off every time you play to the plan. The mana-value floor is what keeps the effect honest: nothing under five triggers it, so you cannot cheat the scream with a dork-heavy curve, and the deck has to genuinely be built around fat creatures. It is a rare instance of red splash damage stapled to a color's least red instinct (playing expensive fatties), and holding those two impulses in tension is what separates this from a beater you simply cast: it wants a whole shell bent toward the top of the curve, and rewards you for the discomfort.