Furious
From Guild Wars Wiki
Furious is a weapon upgrade that grants a 2-10% chance that a successful hit with an attack or attack skill will yield twice as much adrenaline as it would otherwise give. For example, with 14 swordsmanship, a successful hit with Dragon Slash that triggers the double adrenaline gain from Furious will give 11 strikes of adrenaline (12, but -1 for using an adrenal skill) instead of 5 (6, but -1 for using an adrenal skill).
[edit] In-game description
- Double adrenaline on hit (Chance: 2-10%)

