I know that that Rage Prophet is generally considered a fairly weak PrC without some house-ruling, but it fits the concept of a campaign and character I'm currently working on, so I'm wondering if I might be able to make it work to some degree.
The plan I had was to go Oracle of the Waves, and take the Water Form revelation. Elemental Form (water) gives a bonus to Constitution while in it, which seems to synergize very well with the 'Add Con bonus to Spell DCs' ability of the Rage Prophet, especially as the RP's levels stack with Oracle for the purpose of advancing the Water Form revelation to larger elementals (and thus even higher Con bonuses). In combo with the Ice Armor revelation and a good shield, his AC might also get pretty ridiculously good.
We're on standard 15-point point buy, so MAD is going to be a PITA with this concept, but I'm still hoping I can make it work.
Any suggestions for ways to make it more effective, spells in particular that would work well after pumping their DC's this way, feats that would synergize well, et cetera, are welcome. We're limited to Core and APG.