Naga BloodlineSource Blood of the Beast pg. 16
Naga blood flows within your veins. Perhaps a curious naga experimented upon one of your ancestors in an attempt to create the perfect servant, or maybe one of your ancestors was a shapeshifting naga. Either way, you boast powers similar to those of true nagas.
Class Skill: Knowledge (dungeoneering)
Bonus Spells: ray of enfeeblement (3rd), invisibility (5th), lightning bolt (7th), poison (9th), dominate person (11th), veil (13th), limited wish (15th), mass charm monster (17th), shapechange (19th).
Bonus Feats: Alertness, Blind-Fight, Combat Casting, Dodge, Improved Initiative, Lightning Reflexes, Skill Focus (Knowledge [dungeoneering]), Stealthy.
Bloodline Arcana: Whenever you cast a spell with the poison descriptor, increase the spell’s DC by 2.
Bloodline Powers: You can draw upon the ancient magic of the nagas to ensnare the minds of lesser creatures and destroy those who would defy your will.
Vanishing (Sp): At 1st level, you can cloak yourself in illusory magic as a standard action, making you invisible (as per invisibility) for a number of rounds per day equal to your sorcerer level + your Charisma bonus (if any). These rounds need not be used consecutively.
Naga Resistances (Ex): At 3rd level, you gain a +2 bonus on saving throws against mind-affecting effects and poison effects. At 9th level, this bonus increases to +4.
Ensnaring Eyes (Su): At 9th level, add 2 to the save DC of any spell, spell-like ability, or supernatural ability you use that causes a target to become fascinated or that belongs to the charm subschool.
Cast without Hands (Su): At 15th level, you learn to eschew the use of your hands when casting spells, as a naga would. Whenever you cast an arcane spell with a somatic component, you can do so even with your hands full, by twisting and gyrating your body. This doubles the arcane spell failure chance from your armor (if any), and you can’t use this ability if you are pinned or immobile.
Power of the Naga (Su): At 20th level, your form becomes enhanced by the power of the naga. You gain immunity to charm effects, mind-reading effects, and poison. In addition, you can also assume the shape of a naga at will as if using naga shape III.