Nythylia Runa

Flying, Vigilance, Ward—discard two cards

Creature tokens you control count for one devotion to each
of their colors.

Whenever you cast a spell, create an enchantment rune token thats the same colors that says "whenever a creature attacks, if it shares colors with this rune, you may sacrifice this rune and deal X damage to that creature. If the creature is white or black, instead it gets -X/-X until end of turn. Where X equals the total devotion of the casted card."