As an aside, very cheeky to have an enormous watermark blocking off half the content of the perk tree.
Edit: W&V, you are my hero.

Yeah, Totem of Ice Brothers. It is funny because apparently werewolves have a sense of kinship and "Brotherhood". I don't know what the "ice brothers" can be, but it might have to do with summoning wolves. It would be strange, since the Totem of Brotherhood already gives us two Spirit Wolves, and the Totem of the Moon summons another werewolf.
Lore note: If anything, ice brothers can have relation to the frozen werewolves encountered in Bloodmoon.

Can't wait to become a more powerful wolf 

