Scalestorm Summoner

A 3/3 that can never trip its own trigger: swinging in makes a 3/1 Dinosaur only if you already control something hitting for four or more, and the Summoner falls short of that mark by a single point. That gap is deliberate, and it points the deckbuilding somewhere specific. The threshold cares only about what you control, not what attacks, so the genuine beater above the line can stay home on defense while this pokes in every turn as a token spigot. The tokens close a loop worth noticing: a 3/1 sits one point of a buff away from qualifying, so a single anthem or pump effect converts the growing board into a self-feeding Dinosaur line, each new token quietly enabling the next turn's trigger. The check happens on attack rather than on cast or upkeep, so the payoff is gated on commitment to combat: a static board that never swings collects nothing, no matter how large the creatures sitting on it. That framing makes it a build-around, not a body you jam on curve. On an empty battlefield it swings for three and does nothing else, and everything past that vanilla floor is a function of what enabler you have already assembled elsewhere on the board.