Knight of the Stampede

Cost reducers for a single creature type live or die on whether the tribe has enough density and enough top-end to justify the slot, and this is the green half of a Dinosaur discount built squarely around the archetype's absurd curve. The reduction is steep enough to bend that curve hard, dragging the deck's expensive haymakers (the ten- and seven-drop lizards that anchor it) into range a turn or two ahead of schedule, and a second copy compounds rather than wastes, since the discount applies per spell rather than once per turn. The 2/4 body is a sturdy blocker that trades up against small aggressive creatures and rarely dies for free, which is the right shape for an enabler: it holds the fort while you assemble the fat reptiles it exists to cheapen. The friction is that it does nothing on an empty Dinosaur count. Outside its tribe the text is blank, so it swings from dead card to game-warper depending entirely on how many oversized lizards sit behind it in the deck. That is the honest trade for a discounter of this kind: it does not win games itself, it makes a top-heavy build playable, and it is judged not by what it does in a vacuum but by the size and quantity of the Dinosaurs it is discounting.