Meet the ritualist!
This base class surmounts divine order, compelling the gods rather than beseeching them. Featuring a new approach to spell-like abilities based on deities and player-defined areas, the ritualist demands Intelligence both in and out of character. If a bard, cleric and wizard had a baby, dropped it in the Fountain of Awesome and ordered a host of imps to drag it out, they would emerge with the ritualist.
This class hybridizes the support role with authority and has been thoroughly playtested.
See also: Ritualist Tips, Expansion.