Eater of the Dead

The genuinely strange thing about this Horror is that its activation costs nothing, which turns a piece of incidental graveyard hate into a combo engine the moment you find anything that cares about untapping. The ability reads as a defensive measure (a slow chew through opposing graveyards), but the zero-mana cost is the design seam combo builders have pried at since 1994. Pair it with an effect that triggers off untapping or off this creature being tapped, and the "exile a creature card, untap" loop becomes arbitrarily repeatable, limited only by how many creature cards sit in graveyards to feed it. The tap condition is what holds the rate together: the creature must be tapped to fire, and each activation untaps it, so the loop stalls the instant graveyards run dry. That fragility is precisely why it sat as a curiosity for years rather than a staple; the engine demands a second piece to convert the free untap into something other than slowly emptying a graveyard. It belongs to that first generation of cards built around a free activated ability whose value lives entirely outside its own text, the kind of design Wizards now writes with far more caution. As a 3/4 body it is unremarkable; as a zero-cost untap source attached to a graveyard interaction, it is the sort of card combo builders keep in a drawer, waiting for the right partner to make the loop matter.