i remember a great guide on gamefaq with enlisted and explained all this
http://www.gamefaqs....le/919881/11588
take a look. one of the best i know, even if i prefer my own setting
Such a bad listing of spells for a solo run.
This is your best bet to solo the game or even with a party because this build covers a lot of ground. Leaves an extra spot only for a purely offensive mage or just another one to cast spells every round. With this build you shouldn't need another Mage... you shouldn't need a party actually.
Level 1- Magic Missile, Chromatic Orb, Find Familar, Protection from Evil, and Reflected Image. Everything is really useless except MM and FM for the hit points.
Level 2- Web, Mirror Image, Resist Fear, Melf's Acid Arrow, Knock. Useful page in your book
Level 3- Melf's Minute Meteors, Haste (summons), Skull Trap, Remove Magic, and Flame Arrow. This is a tough tree to ration out with your levels. I suggest going with MMMs>Skull Trap>Flame Arrow>Haste>Remove Magic.
Level 4- Stoneskin>Greater Malison>Minor Sequencer>Emotion>Fire Shield Red. SS and GM are the only essentials.
Level 5- Sunfire (very good for soloing)>Shadow Door>Breach>Lower Resistance>and Animate Dead. Your most helpful page yet.
Level 6- Death Spell>True Sight>Pro from Magical Weapons>Power Word Silence (helpful in a game with lots of powerful casters)> and Disintegrate.
Level 7- Project Image>Mordenkainen's Sword>Finger of Death>Spell Sequencer> and Summon Hakeashar.
Level 8- Horrid Wilting>Symbol Stun>Symbol Fear>Spell Trigger>and Simulacrum. A lot of people question Simulacrum but it adds versatility and it always helps to have more of yourself.
Level 9- Time Stop, Spellstrike, and Wish are the only essentials. I go for Gate and Chain Contengency as my picks.
ABC>XYZ indicates you should pick ABC before XYZ to lower your limitations and ability to solo tougher content. By level 12 you should have no problem dispatching a full group like the one that has Celestial Fury as your loot.
A lot will come down to playstyle. I prefer to have minions around because it helps divert a lot of attention off you. You can only make so many saving throws against spells like domination and whatnot, so I find it is best to avoid them like this. There are some spells like Haste you could find yourself commonly using to boost your summons and would rather just use a scroll, but all in all you don't need scrolls as a Sorcerer. Only in the early game will you need help from powerful scrolls and those situations can be avoided altogether or until a later time. The only spell I left out that I wish I could have is spell immunity as it makes fighting Demi-Liches much easier.
Once you add in gear like Staff of Magi, Ring of Gaxx, Amulet of Power, and The Robe of Vecna... you won't have much standing in your way for long.