Moon-Boy, Dino Rider

Every tribe eventually gets its cost-reducer, and green Dinosaurs were short one at the two-slot: a turn-two play that starts shaving mana off the fatties queued behind it. The -off discount is a ramp effect wearing a lord's frame, and because it applies to each Dinosaur spell, a hand loaded with reptiles all arrive ahead of curve. The attack trigger complicates the pure-enabler reading, though. It rewards a Dinosaur you already control before this 2/2 swings, which sorts the sequencing: play it first, deploy the tribe on the discount, then let it grow only once the board it assembled is standing. That order marks it as a setup piece rather than a payoff. The body is honest about that role. It is not built to win combat unaided; it is built to make everything with a claw and a tail land a turn early, and to become a slightly more threatening attacker once the plan is underway. As tribal design it fills the seat every creature-type deck needs occupied before the top end matters at all: the cheap engine piece that makes the expensive cards castable. The flavor lands cleanly too. A small rider steering much larger reptiles is precisely what the mechanics describe, a modest creature bending the mana cost and combat math of things many times its size.