Magus of the Vineyard

Symmetry is the entire balancing act here: the green flood it produces lands in front of every player, not just its controller. As a one-mana 1/1, it is a Magus-style reskin of Eladamri's Vineyard, taking that enchantment's flat -at-each-first-main-phase payout and asking whether the same effect survives on a creature body (cheaper to deploy, more fragile, and now subject to a single bolt or chump block). The wrinkle that distinguishes it from one-sided ramp is the timing: the mana arrives at the beginning of each player's first main phase, so every opponent banks their double green before you ever untap into yours, and any deck built to spend faster than its tablemates turns the shared resource into a head start. That places it in the genre of symmetric engines that reward the player most prepared to abuse them, the same logic behind Howling Mine or Heartbeat of Spring: fair on paper, lopsided in practice. The one mitigating factor is color: the mana it makes is green, which a green-light opponent can pour into spells freely while everyone else can only sink it into generic costs (so it ramps a mirror far more than it ramps a stranger). A 1/1 that hands the table two mana a turn is an unusual creature to want alive, and that contradiction is exactly the question the design poses.