Hati, Moon-Eater

Apocalyptic - When Hati, Moon-Eater enters the
battlefield, if your graveyard has more cards than
your library, it becomes day and can't become
night until end of game. Otherwise, sacrifice
Hati, Moon-Eater, mill five cards and create two
1/1 red Human Werewolf creature tokens.
Whenever a player casts a spell, if it was their
second spell this turn, Wolves and Werewolves
you control get +2/+0 and haste until end of
turn.