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Servant of Deity (3.5e Feat)
From D&D Wiki
Servant of Deity [General]
Your continued faithful service has pleased your god and they mark you as one of there servant by granting you special powers.
Prerequisite: Favored of Deity,Beloved of Deity, 11 Hd minimum. Must make a large sacrifice in the name of the god. Either 40,000 Gp, Or enemies of the faith equal to your current HD x 10. These sacrifices have the same restrictions as Beloved of Deity.
Benefit: You gain domain spell slots for levels 4,5, and 6 spells and immediately gain the ability to cast spells of those level. Casting is the same as Beloved of Deity.
Special: If you are a divine spell caster you get the spell slots in addition to what you already have. All domain spells of third level get an additional + 2 bonus to DC as well as caster level check (stack with Beloved of Deity). Domain spell levels 4, 5 and 6 geta +2 bonus to DC and Caster level checks. If you are an arcane spell caster you can chose to cast these spells as if they were an arcane spell. The arcane spells also get the bonus to Caster level and DC. This bonus to Dc is for when your enemies attempt to resist. This feat can take a while to reach the prerequisites so you can announce your intention to the Dm and start your progress before you take this feat.