Re: Mastery [3.5e, Learned Caster Feats, PEACH!]
For Master Archivist maybe make learning a non-cleric divine spell via level up count as two of your (now 3) spells learned via level up?
As for Power Familiarity I like it fine as is, although a feat that adds 1 extra unique power per day (of any level up to 1 less than the highest level power you have?) might be a nice feat as well.
Blue Dragon DM avatar by Emperor Ing.
: Elemental invocation using class.
Forging dreams into items of power.
Expanding the Inner Planes apparently I'm doing this again
Feel free to suggest planes you'd like more stuff in, add your own content, or tell me what works for you and what doesn't.