Stormclaw's Aspect is a Druid Offensive Aspect that can be found by completing the Anica's Claim Dungeon as well as from random enemy drops. After clearing the Dungeon for the first time the Aspect will be available in your Codex of Power.
How to Obtain - Codex of Power - Anica's Claim
Stormclaw's Aspect Mechanics
Legendary Aspects can change the way skills and builds work in significant ways.
Stormclaw's Aspect cannot Critically Strike except with the Letal Shrine. However, it does benefit from Critical Strikes by Shred, so increased Critical Strike Damage will still benefit it.
For further information, see our Build Guides, Legendary Aspects & Codex of Power
Stormclaw's Aspect