Gloom Ripper

The enters-trigger here reads like a Fireball that scales off your board and your bin at once, but the split payload is what gives it teeth: it pumps one of your creatures upward while shrinking an opponent's downward, and both halves draw from the same X. That X counts Elves you control plus Elf cards in your graveyard, which is the design decision doing all the work. Most tribal payoffs ask only what is on the battlefield; this one rewards the games where your Elves have already died, turning a depleted board into a live threat and folding the graveyard into the count you would normally have written off. The -0/-X clause is optional and independent of the pump, so the card still earns its keep as a pure combat-trick generator when the opponent has nothing worth shrinking, and it can throw a lethal-sized boost onto an attacker without ever touching their side. Two Elves and a full bin turn the enter into a swing that ends a race; an empty graveyard and a lone token make it a modest 4/4 with a shrug attached. That variance is the honest cost of the payoff: it is a build-around dressed as a body, and it wants a deck that has been trading Elves all game long, not one hoarding them.