It can come in handy for AOE parties at lower levels
Flaming Wind: This is a pretty decent skill even though it only has an 8 meter or so line radius. Though it does cost 1 chi which you will be wanting to save Knight Online Gold for much more useful skills at higher levels.
Level it a bit; it can come in handy for AOE parties at lower levels if the mage is taking a bit too much damage.
Bestial Strength: Level this one ASAP since it will make your job a lot easier and it’s pretty cheap too.
Inspire: Always have this at the max possible level since you should have it on whether you’re soloing, AOEing, doing FB’s, running HH, or PKing. Not to mention this skill has affected on your entire party giving everyone 30% more HP at level 10.
Burning Blood: This skill is absolutely 110% necessary if you want to PK. Though the only turn off with this skill is the fact that it has a lot of HP to trade in for 10% more hit rate at lower levels.
But at level 10 it is 200% hit rate for a mere 16% less HP. Trust me at higher levels if you don’t use this you will have a lot of trouble killing dex based builds.