Ember Swallower

A symmetrical land destruction effect bolted onto a fight-finisher, which is a rarer pairing than it sounds. Most red land destruction has been one-sided and proactive: blow up a land, set the opponent back, eat the tempo cost yourself. This builds the symmetry into a creature you were already going to cast as a beater, then lets you choose when the Armageddon-lite goes off. The monstrosity cost is steep on purpose, because the trigger is a Sinkhole aimed at the whole table at once: each player gives up three lands, you included. That self-inflicted clause is what keeps it from being a pure stax piece. You pay the symmetric price willingly because the 4/5 body that fires it is already established on the board, and three counters turn it into a 7/8 that can close while the opponent is rebuilding mana. The design logic is the classic land-denial trade dressed up as a payoff: it asks you to be far enough ahead on board that wrecking everyone's lands hurts them more than it hurts you. Get there a turn early and the monstrosity trigger is a one-sided reset wearing a symmetric mask; fire it from parity and you have just thrown a grenade in a closed room with yourself.