From Guild Wars 2 Wiki
Your next five attacks do critical damage.
- Glyph of Arcane Power (30s): Attacks do critical damage.5
— In-game description [?]
- Elemental Surge - Based on your attunement, arcane skills inflict a condition on foes. Gain more ferocity when you use an arcane skill. Arcane skills recharge faster.
- The number of uses on this skill's effect will decrease even if the attacks miss or do no damage.