Eidolon of the Great Revel

A symmetrical tax that only ever runs in one direction. The damage hits whoever casts the cheap spell, which on paper makes the punishment shared; in practice it lives in decks that have already dumped their hands onto the battlefield and stopped casting two- and three-drops, leaving the opponent to absorb the bill while trying to interact. The clock it imposes is brutal against any deck built on a low curve: cantrips, removal, counterspells, and combo pieces all cost two life apiece to deploy, and a deck that needs to chain four or five of them to set up is paying eight or ten life for the privilege. That turns the 2/2 body into a secondary concern; the enchantment-creature frame actually cuts the other way for the controller, since it dies to both creature removal and enchantment hate, but the body was never the point. Its real function is to stand on the table and convert the opponent's own efficiency into a loss. It belongs to the small family of red Spirits whose stat line is almost incidental to the standing threat they represent, and it remains the sharpest edge against any strategy that wants to win by casting many small spells rather than a few large ones. The symmetry is the price of admission: a deck running this has to be built to fall silent before its own enchantment finishes the job on the wrong side of the table.