You can convert any spell into an attack.
Prerequisites: Arcane spellcaster, caster level 10th.
Benefit: As a standard action, you can sacrifice a prepared spell or unused spell slot of oth level or higher and transform it into a ray, targeting any foe within 30 feet as a ranged touch attack. This attack deals 2d6 points of damage plus an additional 1d6 points of damage for every level of the spell or spell slot you sacrificed. .
Essentia: You add +1d6 Point of Damage / Essentia invested
Special : You also increase the range while essentia is invested
(1 Essentia) You can use it at Short Range
(3 Essentia) You can use it at Medium Range
(5 Essentia) You can use if at Long Range