Wolfkin Outcast // Wedding Crasher (VOW-229) - Innistrad: Crimson Vow: (Double Faced Transform)

This spell costs less to cast if you control a Wolf or Werewolf.
Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

Whenever Wedding Crasher or another Wolf or Werewolf you control dies, draw a card.
Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)