3gCreature — Human Werewolf

This spell can't be countered.

1g, t: You may put a creature card from your hand onto the battlefield. If it's a Wolf or Werewolf, untap Howlpack Piper. Activate only as a sorcery.

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

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Wildsong Howler (4/4)

Creature — Werewolf

Whenever this creature enters the battlefield or transforms into Wildsong Howler look at the top six cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Nightbound (If a player casts at least two spells during their own turn, it becomes day next turn.)