So I was browsing the Nightfall skills at GuildWiki... I find this at the top of the Ranger ones:
For 5..17 seconds you attack 33% faster. This stance ends if you use an attack skills.
Now, "Heket" I recognised as Egyptian, but didn't know from memory what it meant, searched on Wikipedia and found this: Heket
Think Froggy will be teaching us Rangers this skill?