Varcolac, Eclipse Herald

Eminence —As long as Vorcolac, Eclipse Herald is
in the command zone or on the battlefield, Human Werewolves are Daybound and Werewolves are Nightbound.
When Varcolac, Eclipse Herald enters the battlefield you may have it become Night. Night cannot become Day until the end of your next turn
Creatures you control get a +1/+1 for each Wolf you control.
When a Werewolf enters the battlefield under your control draw a card.