Coils of the Medusa

Sitting face-up on the battlefield, this aura announces exactly what it does, which is the whole reason it works. The +1/-1 reads as a small debuff, the sort of stat-shuffle you attach to push an attacker past one blocker or shrink a problematic body. The payload waits behind the sacrifice ability: enchant your own creature, send it in, and let the destruction clause do the talking. Because the opponent can read the threat before declaring blockers, this is a rattlesnake effect, not a hidden trick. They see that anything stepping in front of the enchanted creature dies, so the rational response is to let it through; the aura functions as pseudo-unblockability, with the destruction reserved for the opponent who decides the chump is worth it or who has no better line. The Wall exclusion is the telling restriction: it keeps the aura from clearing a defensive ground-stall outright, holding it to aggressive combat duty rather than removal stapled to a creature. The medusa fiction carries the rest, the petrifying gaze reading cleanly onto the mechanic of destroying anything that dares look the enchanted creature in the eye. Early sets routinely loaded one-shot, sacrifice-to-fire combat effects onto enchantments rather than instants, and the result punishes the block that ignores what is plainly written on the board.