Slushy, Lunar Invoker

Trample
When Slushy, Lunar Invoker enters the
battlefield, it becomes night. While Slushy,
Lunar Invoker is on the battlefield, it cannot
become day.

Whenever a wolf or werewolf you control deals
combat damage to a player, exile the top card
of your library. You may play that card until
the end of your next turn.