shocking grasp (3rd), invisibility (5th), fly (7th), minor creation (9th), overland flight (11th), chain lightning (13th), plane shift (15th), greater planar binding (17th), wish (19th).
Dodge, Empower Spell, Great Fortitude, Improved Initiative, Lightning Reflexes, Power Attack, Skill Focus (Knowledge [planes]), Weapon Finesse.
Whenever you cast a spell that deals energy damage, you can change the type of damage to electricity. This also changes the spell's descriptors to match this energy type.
Like a djinni, you have both natural power over air and several other genie-based abilities.
Electricity Ray (Sp)
Starting at 1st level, you can unleash an elemental ray as a standard action, targeting any foe within 30 feet as a ranged touch attack. This ray deals 1d6 points of electricity damage + 1 for every two sorcerer levels you possess. You can use this ability a number of times per day equal to 3 + your Charisma modifier.
Elemental Resistance (Ex)
At 3rd level, you gain electricity resistance 10. Your electricity resistance increases to 20 at 9th level.
At 9th level, you gain the ability to turn into a 10-foot-high whirlwind once per day for 1 round per sorcerer level (see page 306 of the Pathfinder RPG Bestiary).
Elemental Movement (Su)
At 15th level, you gain a fly speed of 60 feet with average maneuverability.
Power of the Djinn (Su)
At 20th level, you gain the power of genies to grant wishes. Once per day, you can cast limited wish as a spell-like ability. Such wishes must begin with the words "I wish," and cannot duplicate a wish you have granted within the past 24 hours. If you use this ability to duplicate a spell with a costly material component, you must provide that component. You also become immune to electricity damage, and can use plane shift once per day to travel to or from the Plane of Air.