Vengeful Devil

The morbid pinger is an old idea handed a devil's body. The activation gate is what shapes it: the tap ability comes online only in a turn where something has already died, which turns this from a repeatable Prodigal Sorcerer into a reward for the sacrifice engine already running underneath it. In a deck full of aristocrat triggers and expendable bodies, a creature has usually died before your main phase even arrives, so the condition reads as free; drop it into a durdling midrange shell with nothing to feed it, and the ability sits dead half the game. Haste ties the design together, letting a fresh copy start pinging the same turn it lands rather than waiting a rotation for summoning sickness to clear, which matters most when the death you need has just happened. That combination (a cheap disposable attacker that also converts the graveyard's traffic into repeatable damage) makes it a natural fit for the same builds that want to trigger death effects anyway: it can be the body that dies to enable something else, or the removal outlet that picks off an opposing creature after your own bodies trade. Because the damage points anywhere, it doubles as reach to the face when the board stalls. The 1/1 frame is the honest price for repeatable damage at two mana; the morbid clause is the second price, asking the deck to keep the graveyard churning rather than handing you a Cursed Scroll that fires on demand.