For every 5 Willpower purchased within range, you deal +1.0% increased damage while in Werebear form.
You gain 15% Damage Reduction while in Werebear form.
The data for Werebear reflects Season 14, patch 3.1.3. Entries are updated after balance changes.
In the "Glyphs" section of the Diablo 4 database — everything there can be filtered, sorted and searched.
