Rahilda, Wanted Cutthroat

First strike

When Rahilda, Wanted Cutthroat deals combat damage to a player, exile a nonland card from their library at random. During any turn you attacked with a Wolf or Werewolf, you may cast that card and you may spend mana as though it were mana of any color to cast that spell.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)