Let's see here.
Warmage 1/Critter Servant 10/PrC Pal 1/Contemplative 1/Sacred Ex 1/Incantatrix 4/XXX Full Caster 2 would be 20/20, have two means of autopersist, autoquicken, Sor/Wiz/Warmage/Paladin/Cleric spells, 3 Domains of our choice, and 2 free metamagic feats. Take Planning and Pride for sure, for autorerolls on 1's and free Extend Spell at level 2 (yay, persistent at level 3 that we can't use yet), last one is fielder's choice.
Warmage 1/Critter Servant 2/War Weaver 5/Prc Pal 1/Incantrix 3/Contemplative 1/Spell Warp Sniper 5/Divine Oracle 2 gets 3 domains, evasion, nice ability to screw with spell areas, sneak attack (basically), the tapestry with Sanctum 6th's in it, and a bonus to scrying. Slightly less gish, but still awesomesauce. Maybe drop a level of SWS for another level of Incantatrix if we want more metamagic, assuming the capstone isn't super sexy (can't remember) but either way, it can persistify just fine as is. Only losing 1 9th level casting over the first one, and that lost CL won't really be missed with gear/tattoos/spells/the tapestry being bad ass. Hell, Planar Touchstone gives the slot back even.
Warmage 2/Critter Servant 2/Eldritch Knight 5/PrC Pal 1/Contemplative 1/Spellwarp Sniper 5/Abjurant Champion 4 has strong AC capabilities from abjurant armor, strong blasting capabilities from SWS, a domain, 19/20 CL, 16.25 BAB with fractions, half ass decent HP (though a good Con is manditory if you gish it up), and still can play GOD thanks to the Wizard spells.
A lot of these will be using a trick to get divine casting on an arcane class until they qualify for Contemplative, so as to use PrC Pal to advance Warmage casting. This can later be retrained out or PsyReffed, which by the time it's an issue, is well within our means. The last one would make a credible gish. Now :
Warmage 1/Critter Servant 2/War Weaver 5/PrC Pal 1/Contemplative 1/Incantatrix 10. Welcome to powerville. 19/20 with full Incantatrix, extra metamagic, the works. Arguably only rivalled by putting Dweomerkeeper 10 on the end. I'll have to double check to see if Contemplative can be taken before CL 10, but if it can't, take Incantatrix earlier in the builds. Problem solved!