Hircine's Ring reappears in
The Elder Scrolls V: Skyrim.
It's a powerful ring that grants you the power to turn into a
werewolf;
provided that the player is already a werewolf. The ring is useless for
non-werewolves. It is given to you by Hircine, who removes the curse
from the ring, by helping
Sinding in the quest
Ill Met By Moonlight,
choosing to help Sinding will alow the player the recive the ring, once
they leave the cave, but if Sinding is killed and skined the player get
the savours hide.
Also if you want both the ring and the hide you can spare Sinding
and help him kill all the hunters then afterwards kill and skin him
before leaving the grotto to get the Savior's Hide immediately AND receive Hircine's Ring upon exiting the grotto.
Equiping this ring gives you the ability (
seperate from Beast Form) to turn into a werewolf and does not have any restrictions on the number of uses.
you can equip
Hircine's Ring and in the magic -> powers menu you can select 'Hircine's Ring as power and to transform in to a werewolf as many times as you want'