Well, this isn't the spell, but I was just wondering if this would be too powerful...
Esoterica Barracade
Abjuration
Spellcraft DC: 748
Components: V, S
Casting Time: 100 Days
Range: Personal
Target: You
Duration: Permanent
Saving Throw: None
Spell Resistance: Yes
To Develop: 6,732,000 gp, 135 days, 269280 xp, Ward Seed DC 14, Factors: blocks spells of all levels (+180), Permanent (x5). Mitigating factors: Casting time increase (10 minutes: -20 DC, 100 days: -200), change to personal (-2).
This spell causes the caster to forevermore be exempt from the effects of spells and spell-like abilities that duplicate spells of up to 10th level. The caster is automatically exempt from the area of effect of any spell cast at him, and any targetted effects automatically fail. This barracade can be destroyed by an epic feat with either the dispel or destroy seed, but only if the caster succeeds at a caster level check.
The spell I want for Innate Spell (or at least one of them) is:
Eviscerate Dweomer
Abjuration
Spellcraft DC: 125
Components: V, S
Casting Time: 1 minute
Area: 100-ft.-radius
Duration: Instantaneous
Saving Throw: No
Spell Resistance: None
To Develop: 1,125,000 gp, 23 days, 45,000 xp, Dispel Seed DC 19. Change from target to an area (20-ft.-radius) (+10), Increase Area by 400% (+16), +80 to the Dispel Check (+80)
This spell, when cast, dispels all spells within the radius as if their duration had ended, including spells that normally cannot be dispelled. It also ends the ongoing effects of a supernatural ability, and it effects spell-like abilities as if they were spells.
The caster makes a dispel check of 1d20+90 against each creature, spell and item within the radius, with the DC being for each effect 11+target spell's caster level.
Any items affected by this spell do not permanently lose their magical properties; instead the magical properties are suppressed for 1d4 rounds, during which time the item is not magical.
If there is an interdimensional interface (for example, a portal) within the radius of the effect, it becomes closed for 1d4 rounds.
This spell can affect any type of magic, even that of gods and artifact-level magical items.
The caster may elect to be exempt from this effect.
I hope that's not too crazy...