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.
Peanut Dracolich avatar by Emperor Ing.
My homebrew (now includes a giant undead brain)
If you ever want to try some of my homebrew and need a DM send me a PM.
Gonna be busy for a bit this weekend expect responses to be limited in time frame.