Mathas, Fiend Seeker

A legendary creature built around a taboo: it makes killing creatures a reward for the table. The bounty counter turns removal into a bounty, because whoever finally puts the marked creature in the graveyard hands every one of its controller's opponents a card and two life. That inverts one of the game's most reliable social contracts. Normally the player who neutralizes the biggest threat is doing everyone a favor; here, doing that favor pays the table around you. The design leans on multiplayer politics in a way a two-player card cannot: a bounty on someone's commander or engine creature becomes a standoff, since everyone wants someone else to collect the bounty. Menace is the quiet enabler, keeping the 3/3 body pressuring while the end-step trigger seeds counters faster than opponents can safely resolve them. What sells the design is that the counter rides along permanently, so bounced-and-recast creatures shed it but sacrifice outlets and edicts do not save the controller from the payoff either. The result is a card that does not win by racing or grinding; it wins by making the board legislate itself, freezing threats in place and forcing opponents to trade with each other instead of with you. It is a genuine multiplayer-native design, one whose value is muted in a duel and blossoms at a full table.