Basalt Ravager

Here is a burn spell stapled to a body, and the size of the burn is a referendum on how committed your board is to a single creature type. In a pile of unrelated goodstuff, X is one: it counts itself, a Giant Wizard, and probably nothing else, so the enter-the-battlefield trigger fizzles into a single point. Line up a wide tribal board (Elves, Goblins, Zombies, anything that shares a word on the type line) and X scales with the whole team, turning a four-mana 4/2 into a removal spell that can clear a blocker and still leave a threat on the table. The design leans on the fact that a shared creature type is a resource most decks throw away and tribal decks hoard: the same board presence that makes your attacks lethal also loads the trigger. The counting clause is doing the balancing work, because it refuses to reward incidental synergy; you cannot splash this into a midrange shell and expect four damage. It wants a deck already built to share types, and it pays that deck with reach the tribe usually lacks. The two toughness keeps it honest as a body, so the value is front-loaded into the arrival, not the ongoing beatdown.