Estrid, Demented

+3: Tap each nonland unenchanted permanent target player controls. They lose 1 life for each permanent tapped this way.
-1: Create a colorless Aura enchantment token named Mask attached to another target permanent. The token has enchant permanent and totem armor.
-18: Sacrifice X enchantments and/or enchanted permanents. You gain twice X life, and each opponent exiles X permanents they control or loses X life.