From the BG Q&A thread there was this custom SDA:
Divine Spell Mastery
Prerequisites: Caster level 20 (or 10, see text), Divine Spellcasting, Key Ability Score 40+, Knowledge (arcana, religion, OR nature) 35 ranks, Spellcraft 35 ranks, Practiced Caster
Benefit: Through the deity's devotion to the art of spellcasting and its incredible skill in the area, the deity has exceeded the casting limits that would ordinarily be expected of it. The deity is always treated as having a caster level equal to its hit dice for the purposes of caster level checks and spell effects dependent on caster level. If the deity has multiple spellcasting classes, it must choose a single class to apply this benefit to, and the deity must have a caster level of 20 in that class. Deities with levels in a class whose caster level is 1/2 class level need only have caster level 10 to qualify, but deities who qualify via this method must apply the benefit to a class with 1/2 caster level progression, and deities who apply this ability to such a class are treated as having a caster level equal to half of their hit dice.
Tshern said a psionic version could be allowed in the Wotc board. So I'm wonder if this SDA could be allowed
Divine Mastery:
Prerequisites:Effective Class level 20 in relevant class. Divine Rank 6
All level dependent abilities of the class are set equal to the Deities HD(ie Caster level, Manifester level, effective F . This bonus overlaps (does not stack with) with bonuses from any other source(ie Orange Ion stone, Monk's Belt,
Special: You can take this multiple times, selecting a different class each time.
If not what about
Just Divine Spell Mastery and a psionic version?
