Looking at the Archivist, I am saddened by the lack of Spell mastery equivalent. I know we could house rule it, but the Archivist benefits slightly more from mastery and the abilities which interact with it (Such as Signature Spell) than wizards. Hence, I decided to Homebrew!
Prayer Mastery [General]
Your mastery of spells is so complete that you can prepare some without your Prayer book.
: Archivist 1st, Int 15, Knowledge: Religion 4 ranks, Spellcraft 4 ranks
: When you take this feat, select a number of spells you have in your Prayerbook equal to 3+your intelligence modifier. Non-cleric spells count as 2 spells for this purpose. Non-Cleric includes spells which appear on the Cleric Spell list but have been obtained from a spell list apart from the Cleric one. From this point onwards, you can prepare those spells without referring to your Prayer book.
As a secondary benefit, you gain a +2 bonus on spellcraft checks to copy spells into your prayer-book.
: An Archivist may select this feat as a bonus feat when she is eligible for bonus feats.
Prayer Mastery counts as Spell Mastery with regards to Feats and Abilities. Where such a substitution would count with Arcane spells, it will instead function with Divine Archivist Spells. If you have both Arcane class levels and Archivist levels, and each has Spell mastery and Prayer Mastery respectively, and you have a feat that benefits Spell Mastery, you must select the feat twice to gain the benefit for both Prayer and Spell mastery. This is an exception to the rule that most feats may only be taken once.
Prayer Mastery does not qualify as Spell Mastery for Class Level Substitutions or Prestige Classes. It does, however, allow you to benefit from abilities granted by the above, provided you forfeit the benefit provided to the usual benefit Spell Mastery would give you for the benefit to apply instead to Prayer Mastery. For example, if Mialee entered a Prestige class as a Wizard 3/Archivist 3 and possessed the Spell mastery and Prayer Mastery feats, and the 1st level of the prestige class allowed you to cast spells mastered at +2 DC, she could select Prayer or Spell mastery to receive that benefit. If, at the next level, she gains the ability to select 2 spells spell mastered to gain a permanent +1 effective spell level (As Hieghten Spell), she could apply all the benefits to Prayer or Spell mastery, or 1 to each.
You can select Prayer Mastery more than once. Each time you select this feat, its benefit applies to a different set of spells.
Master Archivist [General]
Seeking out sources of Forbidden Lore, you have gained experience in the matters of research and understanding spells above the normal Archivists of your kind.
: Int 17, Archivist level 5th, Ability to cast at least 6 non-cleric spells, Spellcraft 8 Ranks, Knowledge: Religion 5 ranks, Skill Focus: Spellcraft.
Each level you gain in the Archivist class (Including if you gain an Archivist caster level from a prestige class), you gain an extra spell each level in addition to your base 2 spells gained each level. These spells gained at each level do not have to be Cleric spells, rather, they can be any Divine Spell you could research. To select a divine spell in this matter, you must have a number of ranks in spellcraft equal to twice the spell level.
In addition, you gain a +2 bonus on spellcraft checks to copy a spell into your prayerbook.
Finally, you gain a +4 bonus on Gather Information checks to locate spells.
: You may select this feat as an Archivist Bonus feat.
Master Scriber [General]
You are adept at scribing spells into scrolls, spellbooks, prayerbooks and the like.
: Craft (Calligraphy) 4 ranks, Spellcraft 4 ranks; Scribe Scroll or the ability to prepare spells from a book of any kind, such as a spellbook.
: When scribing spells into a book of a kind or a scroll, you reduce the cost of raw materials by half. Scrolls scribed by you still cost an amount of XP equal to what they would cost normally. The benefits of this feat stack with other feats that reduce Item creation cost for scrolls.
As a secondary Benefit, you gain a +2 bonus on spellcraft checks related to the scribing of magical writings.
: A Wu-jen may select Master Scriber as her first level bonus feat, in place of the Bonus Metamagic feat normally granted to Wu-Jens at 1st level. She may also select Master Scriber at any level she would gain a bonus feat from the Wu-Jen class. She must meet the prerequisites regardless of when she selects the feat.
A Wizard may select Master Scriber as a Wizard Bonus feat. She may also select Master Scriber as a bonus feat in place of the Scribe Scroll bonus feat normally granted by the Wizard Class at 1st level. She must meet the pre-requisites regardless of when she selects the feat.
An Archivist may select Master Scriber as an Archivist Bonus Feat. She may also select Master Scriber as a bonus feat in place of the Scribe Scroll bonus feat normally granted by the Archivist class at 1st level. She must meet the pre-requisites regardless of when she selects the feat.
A Cleric or other Domain user who Selects the Craft or Rune Domain (Or some other domain that grants either Skill Focus or Scribe Scroll as a bonus feat) can select Master Scriber as a bonus feat in place of the bonus feat granted by that domain.
Elemental Spell Mastery [General]
You can prepare some Wu-jen elemental spells without referring to your spellbook.
Wu-Jen 1st, Int 17
Choose a number of spells equal to 5+your intelligence modifier from your spellbook. When choosing these spells upon gaining this feat, you select a single Element. Spells not in the (All) section of the Spell list that are not of that Element count as 2 spells for the purpose of this feat.
From now on, you can prepare the selected spells without a spellbook.
: A Wu-jen may select Elemental Spell Mastery as her 1st level bonus feat in place of the bonus Metamagic feat that all Wu-jens receive at 1st level.
Elemental Spell Mastery counts as Spell mastery for all intents and purposes, including qualifying for feats, prestige classes and the like. It cannot, however, allow a Wu-jen to qualify for a Wizard class level Substitution.
You can select Elemental Spell Mastery more than once. Each time you select it, it's benefit applies to a different set of spells.
Master Erudite [Psionic]
You are a master of adding powers to your repertoire. Your skill with learning exceeds those of your fellow Erudite psions, making you truly excellent in your field.
Int 17, Psi-craft 4 ranks, Gather Information 4 ranks, Psionic Talent;
You are not limited to the Psion Power list when choosing your 2 new powers gained each level from research or your starting powers. Each power you learn in this way cannot have a level higher than half your ranks in Psi-craft and Gather Information.
As a secondary benefit, you gain a +2 bonus on Psi-craft checks to learn new powers.
: Master Erudite may be selected as a bonus feat in place of Psi-crystal affinity normally gained by members of the Erudite Class at 1st level. Unlike most Psionic Feats, the benefit of Master Erudite does not cease functioning in an Anti-Magic field or Null-psionics field.
Power Familiarity [Psionic]
You have mastered some powers so well that you can retain your flexibility while using them with less drawbacks.
: Erudite 1st, Int 18, Psi-craft 4 ranks, Psionic talent, Knowledge: Psionics 4 ranks, at least 2 powers in the Erudite's repertoire that have been learned outside of those gained when starting play or those gained each level.
: Choose a number of Powers you know equal to half your Intelligence modifier, rounded up. As long as you expend extra power points when manifesting these powers equal to that power's level, they only count as half a power when determining your unique powers per day.
: Power Familiarity may be taken as a bonus feat in place of the Psicrystal Affinity bonus feat normally gained by members of the Erudite class at 1st level. Unlike most Psionic feats, the benefit of Power Familiarity is not a supernatural ability, however manifesting Familiarized powers will be restricted as normal in the usual way.
What do we all think? Crazy, silly, overpowered? Good? Please tell me what you think.