Well if you want cheese just go for broke I guess..

1st - Wiz 1 (pay for a poly on you to a Dusk Giant, then psychic reformation to re assign the skill points from all the chickens you eat(cannibalize ability)). Feats - Iron Will, Extend Spell, (flaw) Sanctum Spell, (Flaw) Precocious Apprentice
2-8 Incantrix
-?? Win

Pick the meta-magic feats you want, you'll have instant meta-magic at 8th level. Be sure to buy an item to get a spellcraft bonus of however high you want. From here well you can break things easily. Though this kind of cheese is silly and tends to vanish when you blink.