Wow, nice work RigaMortus2. I think you might be able to do it faster than 6th level, though. It'll take a flaw, but tjeck this out:
Illumian (Naenhoon) Cleric 2/Human Paragon 2
Feats: Heighten Spell (1), Human Heritage (flaw), Sanctum Spell (3), Extra Slot (Human Paragon 2)
I'm AFB, so I'm...