Nine-Ringed Bo

A hate card built for a world where Spirits were the whole metagame. The pinger does only one point of damage and only ever to a Spirit, which makes it useless against most of the format and brutal against the one tribe it names. The real teeth are in the exile rider: any Spirit it kills (or that anything else kills while it has taken a point this turn) is removed from the game rather than dying, which neuters the recursion engines that gave the tribe its staying power and slams the door on death triggers. That narrowness is the whole bargain. A repeatable, colorless, three-mana machine gun would be unprintable if it shot anything; restricting it to a single creature type is what lets it tick every turn with no further cost. It belongs to a specific era's design vocabulary, when sets shipped with narrow answers keyed to their own tribal centerpieces, the way a card might name Goblins or Slivers and do nothing in any other room. Outside a Spirit-heavy field it is a colorless three-mana paperweight, and that is by design: the card is a scalpel cut to the exact shape of one matchup, with the exile clause turning a slow chip-damage effect into permanent removal that the recursion-rich tribe it targets could not easily play around.