[Justice] [Adventurer] Thieves

Question 1:
Dark Serenity: It has an MP cost but no duration listed, how does it work?

K, that one is Nexon's fault. The original description didn't list its duration. It lasts 93 seconds at level 1 and 180 seconds at level 30.

Question 2:
Will Quad Throw work with Mastery? I've been under the impression that L7 didn't for a long time, and that TT still doesn't (the reason why it doesn't work with Expert Throwing).

I thought they changed that in Chaos for Triple Throw.