[Challenge] Level 1 Commoner as a God!

[dextercorvia]

Say, are there any feats (or chain of feats) that could perhaps give COMMONER spellcasting or psionic powers known?

Heighten Spell
Earth Sense
Earth Spell
Sanctum Spell
Improved Krau Sigil
Magical Training (Gives some 0 level spells and Caster level 1st)
Precocious Apprentice (Apply Improved Sigil to this spell)
Use items to boost CL to 4th (Including a custom UMD item if necessary)
In your Sanctum(which is in a suitably earthy environment) you can cast at least one 5th level spell.
Take Extra Slot, gaining a 4th level slot.
You have gained a new level of spells (6th with sanctum/earthspell) so you can choose to apply your IS-Krau to a different spell. Choose one of your cantrips.

You can now cast 7th level spells.
Take Extra Slot again, gaining a 6th level slot, and again for an 8th, and one more time for a 10th level slot.

That's 11 feats used. 10 more your choice. I recommend at least one Extra Spell (you can pick up to a ninth level spell), since you have no other mechanic for learning spells. Drakehelm would probably be a good item choice.

Edit: I didn't post this sooner, since several of the feats are dependent on earlier ones.

Edit2: For items, how about Ring of Arcane Might, Orange Ioun Stone, and scroll of CL11 Magic Tatoo.