Lesser Signet of Might
From Guild Wars 2 Wiki
Your attacks become unblockable.
— In-game description [?]
- Signet Mastery — Signets gain reduced recharge and grant a stacking ferocity boon on use. Cast Lesser Signet of Might whenever you strike a foe below the health threshold.
- Lesser Signet of Might will still generate might when activated, even if not stated in the tool tip