Sun-Collared Raptor

The body asks for nothing and the firebreathing pays you back later. A 1/2 for two mana barely registers as a clock, but the activated ability is a mana sink built for the back half of a game: each turns a stalled board into reach. Trample is the load-bearing word here, not the firebreathing itself. Without it the +3/+0 just gets chump-blocked into nothing; with it, every activation pushes damage through the gaps and rewards stacking pumps when the opponent commits a single blocker. That makes the raptor a different creature late than early: on the second turn it trades down and dies to anything, but with lands to spare it converts surplus mana into a finishing threat that scales with how much you can hold open. The Dinosaur type is the flavor; the firebreathing-plus-trample chassis is the substance, a pattern as old as Shivan Dragon shrunk to a two-drop's price point and a fragile frame. What it asks of a deck is straightforward: enough lands that the sink stays live in the late game, and a plan that wants its early creatures to still matter once the board clogs.