Ebondeath, Dracolich
The recursion clause is the whole engine, and it is built to be nearly impossible to shut off: not a discard cost, not an exile-on-cast tax, just a single condition (some other creature died this turn) that a black deck satisfies as a matter of course. Most graveyard threats that self-return ask for a real payment. This one asks for nothing you were not already doing, which means it comes back on your terms, at flash speed, again and again. The 5/2 body reads fragile, but the two toughness barely matters when the card treats the graveyard as a second hand; block with it, trade it in combat, feed it to your own sacrifice effects, and it keeps flying back the moment anything else dies. The tap-on-entry line is the pressure valve that keeps the loop honest: it cannot ambush an attacker or block the turn it arrives, so the flash and flying pay off on the following turn rather than instantly. What you are really buying is a threat that laughs at removal wherever bodies are dying on a regular clock, a Zombie Dragon that slots into a tribal shell or a grindy attrition plan without demanding you bend around it. The design lineage runs through every hard-to-kill black recursive creature, but the trigger here is loose enough that the card functions less like a creature you cast once and more like a spell you never fully spend.
