Reason
Berserker no longer relies on Full Moons, so Werewolf has a completely unique mechanic.
Seeing how it has Scent, I thought "why not randomize First Full Moon?" for consistency.
Mechanics
Full Moon can trigger on Night 1 and Night 3 now, but will need to wait until Night 4 to trigger another Full Moon and onward.
This helps Werewolf have consistent Wills for the Time Being, as well as avoiding other Evils trying to pin the Werewolf Down for inconsistency.
Only 1 Full Moon can be triggered before Night 4.