Desecration Elemental

An 8/8 with evasion for four mana reads like a printing error until the second line resolves the math: every spell cast by anyone forces you, and only you, to sacrifice a creature. The trigger does not touch your opponent's board; it eats yours, one body per cast, indiscriminate as to whose spell it was. That asymmetry inverts the usual oversized-beater bargain. The deeper trap is what happens when you have nothing else to feed it: with no other creatures in play, the next spell anyone casts (yours included) sacrifices the Elemental itself. So the body that looks like the payoff is also the first thing on the chopping block. The card demands a standing supply of expendable creatures to keep the 8/8 alive through every exchange on the stack, which means it works best alongside a board you are willing to dismantle rather than one you are protecting. Fear narrows the legal blockers to artifact and black creatures, so once it survives long enough to attack it tends to land its full bite. The lineage is the absurd-stats-with-a-cruel-rider design, the territory Phyrexian Negator and Phyrexian Dreadnought stake out in their own terms: a body priced far below curve, sold with a clause that punishes the wrong supporting cast. Here the toll is paid in installments rather than all at once, and the installments come due on your side of the table every time the game ticks forward.