Force Master Force Sheath Skill

[DragonH]

I saw this skill on a lot of PVP Builds, and my question is:

In what situations i use it?

Why should i make a priority on lvling this skill and not the others?

 

P.S: I saw the Jaengsu TV or something like that and he had the skill on his build, i wanna know how usefull the skill is and in wich conditions i should use it.

 

Cheers

[InoriYuzurihaDesu]

I mainly pve, i have 2 points into it, and its usually used when ur party about to take big dmg, upon getting hit, it freeze them for 5 sec making them dont take any dmg from incoming attacks.