I like the bard1/ Sorcerer1/ Favoured Soul 1/ MT 7/ Fochlucan Lyrist 10, Straight up one stat spell progression. Start off with Versital spell caster, will even come in handy later on in game, Hiegthen spell will nee to go bye bye tho. Just pick up a ring of evasion and have the bard learn druidic.
Feats
1:Versital Spell Caster
1:Heighten Spell ((Retrain in maximised spell) Check out my sign for hwat has been done)
3:Spell Focus: Necromancy
6:Metamagic School Focus
9: ARCANE PREPARATION
12:Delay Spell
15:Split Ray
18:Twin Spell
Assuming a 23Cha by Level 20 you would get 14x 0 level, 16 x 1st level, 16 x 2nd level, 14 x 3rd Level, 14 x 4th level, 14x 5th level, 14 x 6th level, 12 x 7th level, 12 x 8th level and 6 x 9th level spells PER DAY Or in a nut shell 116 spells perday that aren't locked in like a wizards or clerics.