...FB the Fatal Blow?

lol thare's no matter if mage or killer.
FB works like this:

Is a Human Target has lower then 50% HP, u atk him and u kill him in one hit, (usually it shows 63k dmg)

DS is for warriors. more str = more dmg.

and u can hae ALL skills on a char: Sould dodge, Blood Suck, GS, FS, DS, FB..

its not like if u have DS u cant get the FB, or other quests... there's only the help problem x3