| Ramarren |
This has already been answered somewhere else on the boards, but rather than try to hunt it down, I can give you the simple answer.
No. You cannot end up with a negative level adjustment from a spell by applying a Metamagic Feat, even with this trait.
(The initial attempt to use this involved Merciful Spell and Magic Missile in order to have infinite Merciful Missiles as a 0-level spell)