Ancestral Mask

A scaling rate that breaks the usual aura math: most pump auras tie their bonus to a fixed number or to the enchanted creature's own attributes, but this one keys off the global enchantment count, so the more enchantments on the table, the bigger the buff. The design is built for enchantment-density decks where the board is already a pile of pacifism effects, totems, and other auras doing their own jobs; the bonus stacks on top of work you were already paying for. The friction is the obvious one for any aura: it is a card-disadvantage proposition that evaporates if the enchanted creature is removed, and it counts only other enchantments, so it does nothing as the first permanent down. The payoff curve is the inverse of how most green pump spells are tuned: instead of a flat, reliable bonus, you get a number that can swing absurdly high in a deck purpose-built to flood the board with enchantments, and close to nothing in a deck that is not. That binary, all-or-nothing scaling is the whole bargain at three mana: cheap to deploy and cheap to splash, but the ceiling is only available to a deck that has organized itself around enchantments as a resource rather than as incidental effects.