Prestige Classes for Duskblades?

[Fax Celestis]

Actually Duskblade 13/Chameleon 7 is rather nice. I think the channel ability only works for your duskblade spells so that wouldn't work for UR-Priest. Jade Pheonix mage means losing 3 caster levels which weakens your casting even more then it is already. Jade Pheonix mage works best with warblade/wizard gish builds.

Arcane Channeling works with any spell you have access to, up to and including divine spells (and psionic powers, if you have magic/psionics transparency).