Fury of the Wilds is a Unique Ring in Diablo IV Season 15. It drops from The Butcher.
Unique power
When you Shapeshift into either Werewolf or Werebear form, you gain Berserking for [6-8] seconds. Additionally, Berserking grants 1 stack of Ferocity every 1 second while active. Berserking's damage bonus is increased by 10%[x].
Affixes
+111 All Resist
+[1-2] to Shapeshifting Skills (1-2)
Where it drops
World drop (any difficulty, drop rate scales with Torment tier)
Dedicated drop: The Butcher (Greater Lair Boss, Gea Kul, Torment 1+; Boss Trophy: Fresh Meat)
Horadric Cube: Item Transmutation (Amalgamation) - 5x Fresh Meat (Boss Trophy) rolls a Unique from this boss's pool; can roll Mythic quality with the 'Crafted' tag
Horadric Cube: Item Transmutation (Upgrade to Unique) - Common item of the same slot + 1 Enhanced Primordial Dust + 10 Primordial Dust (random Unique of that slot)