Opal-Eye, Konda's Yojimbo

Enchant creature Enchanted creature has "Whenever this creature deals combat damage to a player, add that much G. Until end of turn, you don't lose this mana as steps and phases end."

Flying 2, Return a land you control to its owner's hand: Tap target land.

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature. 1, T, Remove X ki counters from this creature: Target creature gets -X/-X until end of turn.

Whenever this creature attacks or blocks, you lose 1 life if you don't control a Demon.

The "legend rule" doesn't apply.

Flying Creatures you control have "Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."

Enchant creature Enchanted creature has flying. Sacrifice this Aura: Return enchanted creature to its owner's hand.

T: Add C. When Gods' Eye is put into a graveyard from the battlefield, create a 1/1 colorless Spirit creature token.