Soul Snuffers

Symmetry is the whole gambit here, and the asymmetry is yours to engineer. A 3/3 body that shrinks every creature in play by a counter looks like a wash until you account for what counters versus what doesn't: a -1/-1 counter sticks, so it permanently saps regeneration-proof toughness, deflates token swarms into nothing, and erases the small utility creatures that other sweepers leave standing. The shaman that triggers it survives its own pulse as a 2/2, which is the design's quiet thesis: this is a one-sided wrath dressed as a symmetrical one, payable in full only if your board outsizes the table's. Because the effect rides a counter rather than damage, it shrugs off indestructibility and hexproof entirely, and it pairs naturally with anything that profits from creatures dying or from -1/-1 counters spreading further. The friction is that the counter lands on your own creatures too, so the deck around it wants either resilient bodies that survive the dip or a board built to be emptied, with this as the trigger that clears the way. It is recurrable, blinkable, and reanimatable in ways a one-shot sorcery never is, which reframes a four-mana 3/3 from a fair creature into a repeatable attrition engine for grindy black builds that would rather kill the same small board three times than spend a card doing it once.