Soon to hit 77, can't decide priorities on next skills - Curse Doom looks good, warrior bane is clearly for pvp, don't understand what skill mastery is though, seems to be either a good thing or a bad thing (something about doubles duration of skill usage or lessens chance of canceling, idk) - is it worth getting first? What have others gone for 1st, 2nd and 3rd?
Stay away from Skill Mastery for a lot of reasons (search the forum for info if curious), waste of SP for what it does. Now if you can only afford 1 of the other 2, I sugest learning Curse of Doom first.
Happy hunting.
There are two possible (% chance) effects. You only get one or the other, not both though. First effect is a possible instant refresh of a skill. So UD without a 20 minute cooldown, Frenzy ready right after casting, things of that nature.
The second possible effect is a double duration effect on skills.
From all reports, if something goes onto your 'Buff bar' and it's time based (AKA not a toggle) then there is a chance for the time to double on it. So a double duration CoV/PoW/Focus etc...
But here's the kicker...apparently the skill cannot tell a buff from a debuff! So not only can you get double duration buffs, you can get double duration DEBUFFS! 2x Paralyze, 2x Bleed DoT, 2x Stun, 2x Poison, etc
It is this 2x debuff effect that makes the skill more of a DE-skill than it is a skill. Not only does it throw off buff cycles, aka your going to rebuff everything else *anyway*. But your hit with debuffs far more often by mobs and pvp than you are by actual buffs. (Vortex's, stuns, sleeps, paralyzes, etc.)
Thanks for the heads up on that guys. For others in the same boat as me, here's the link to the thread which discusses skill mastery in depth - so glad I did some research before plunging into this particular abyss :O