Bossing Sorcerer Skill Builds

Offensive Skills

Frostbite (Level 1/10)[Attainable at Level 1]

Leave it at level 1 to freeze monster.

Incinerate (Level 1/10)[Given at Level 1]

Leave this skill alone. 1 point is given to this skill for free by the game developers.

Blizzard (Level 1/10)[Attainable at Level 20, Requires 1 point in Frostbite]

Leave it at level 1 to slow movement speed of target.

Flame Strike (Level 8/10)[Attainable at Level 20, Requires 1 point in Incinerate]
Huge AoE, low cool down with HP reduction debuff. Very good for clearing dungeon trash monsters and bossing.

Support Skills

Breath of Life (Level 1/5)[Attainable at Level 5]

Put 1 point in this skill to revive.

Sorcerer Ice & Support Build

Some people might wonder why i did not touch on Renewal such a good skill.

Reason : 

1st, its too slow. Unless before battle, during battle you won't have the time to even use it.
2nd, the heal amount is fixed, as healing has chance of dealing MCrit Damage, meaning if you have 200% Mcrit Damage, by using Invigorate and MCrit occured i can heal double
3rd, in transform mode, Invigorate can be instant cast and repeatly cast.

Main skill is Frost bite and Blizzard.

Skill routine
Frost bite -> Blizzard -> Frost bite -> Frost bite -> Frost bite -> Blizzard
By do it this way, the monster usually won't touch you at all, and even if it does. using Invigorate, i can instantly recover your HP.

The skill column on the right i choose the HP  + Healing rate.
as a support class, without decent HP no matter how much you can heal, no point if you died in 1 hit .

2 remaining points is for 2nd job