Kargan Dragonlord

Two mana buys a 2/2 whose printed abilities from the start are the pump that fuels its beats and the level-up cost that grows it: the level-up cost itself, paid one red at a time on your own turn to upgrade a two-drop body into a threat that scales with the back half of a game. The escalation is steep. Each red sunk in at sorcery speed pushes it toward a 4/4 flier, and at the top tier it becomes an 8/8 with trample that keeps pumping itself with extra red at instant speed during combat. Most leveling creatures cap out at a fixed final stat line; this one never stops eating mana, converting every late-game red into trample damage that flying already makes hard to wall off. The cost structure is also the discipline holding it in check. Because every counter is paid as a sorcery, the creature sits exposed on the turn you tap out to grow it, and removal erases the whole investment with no protection or recursion to recover it. That fragility is the price of front-loading all the upside into one body: it wants a manabase that can flood red on demand and a deck willing to commit to a single threat rather than hedge across several. It is a mana sink folded into a curve-topper the size of a two-drop, built for the aggressive red deck that wants its excess lands to mean something past the midgame.