true strike (3rd), glitterdust (5th), greater magic weapon (7th), stoneskin (9th), wall of stone (11th), wall of iron (13th), plane shift (15th), iron body (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 acid. This effect also changes the spell's descriptors to match this energy type.
Like a shaitan, you have both natural power over earth, and several other genie-based abilities.
Acid 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 acid 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 acid resistance 10. At 9th level, your acid resistance increases to 20.
At 9th level, whenever you hit a single target with a spell that deals damage, you may make a bull rush check as a swift action. Your CMB for this maneuver is equal to your sorcerer caster level + your Charisma bonus. You can make this maneuver even if the target is not in melee range, and you do not provoke an attack of opportunity for making this maneuver. If the target is in contact with earth, stone, or rock, you gain a +4 bonus on your CMB check.
Elemental Movement (Su)
At 15th level, you gain a burrow speed of 30 feet.
Power of the Shaitan (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 become immune to acid damage, and can use plane shift once per day to travel to or from the Plane of Earth.