skills that are a must for soul hunter:
Bloody arrow-instant damage and Dot
Rake nail- instant damage and dot
(both can be cast "on the fly")
Invisible-eva+ self only. (only 1 point to hold u till u can get BoW.)
Blessing of Wind - eva+ & castable on party members.
Soul Shield - self cast +short range def
Counterattack - + SR def & reflect % dmg taken
Lithifying terror - petrify target. good for CC
both those going dominator and those going defiler should invest atleast 1 point in both summon lenatore and summon Kazara for the extra support.
i also suggest but its not neccisary to get atleast 1 or 2 AoE spells. the ones i reccomend are arrow of ruin and blood storm although Deadly bomb is nice because it does not cause any initial aggro till the timer is over and it explodes, giving u time to cast another timed cast spell b4 the damage is done and the mob comes after you
its also just a suggestion as i have not used it myself but it might not hurt to get relapse wound AoE def reduction spell to use on mobs.