O) Rahilda, Feral Outlaw

Double strike
When Rahilda deals combat damage to a player,
that player reveals cards from the top of their
library until they reveal a nonland card. Exile that
card, then that player shuffles. 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.
Nightbound