Alexios, Deimos of Kosmos

The rare Voltron creature that nobody keeps for long. At the beginning of each player's upkeep, control passes to whoever is about to take a turn: the 4/4 untaps, picks up a +1/+1 counter, and gains haste, so it spends the game circling the table and swinging at whichever opponents the current controller can reach. That rotation is the whole tension. Every player is briefly its master, and the counter you add on your turn is a threat you inherit and then hand off, one point angrier each pass. Note the precise limit on that swinging: it can't attack its owner, meaning the player whose deck it started in, not simply whoever held it last. So the original owner is the one seat permanently exempt while everyone else stays fair game, and that carve-out shapes the entire political read of the card. The static restrictions are what stop this from becoming a beater someone parks and forgets. It attacks each combat if able, so no one can hold it back on defense, and it can't be sacrificed, so the usual out (feed the unwanted body to something) is closed. What does not stop the handoff is a Pacifism-style effect: that prevents attacks, but the control-change trigger fires on every upkeep regardless, so a neutered Alexios still marches around the table growing. Removal in the open is the only real answer. It belongs to that small family of never-yours permanents that turn a stat line into a table-wide political object.