Erudite

Psionic variant of the wizard with a unique casting method.

Summary
Unique Spells Per Day:

OR AT ARCANE TRAD LEVELS what about at each level after learning anew so each even? or...
 * 1
 * 2
 * 2
 * 2
 * 2
 * 3
 * 3
 * 3
 * 3
 * 4
 * 4
 * 4
 * 4
 * 5
 * 5
 * 5
 * 5
 * 1) Spell Mastery (1 1st and 1 2nd do not count against uniques)
 * 5
 * 1) Signature Spell (2 3rd levels do not count against uniques)
 * 1
 * 2
 * 2
 * 3
 * 3
 * 4
 * 4
 * 5
 * 5
 * 6
 * 6
 * 7
 * 7
 * 8
 * 8
 * 9
 * 9
 * 1) 9 plus Spell Mastery or 10 plus sm?
 * 9
 * 1) 9 plus Signature Spells or 10 or 11 plus sm?

what if just give unique ups at each level younleanr a new level of spell? (Odds) still 1-9...

Mindscape
Your 'spellbook' is your mindscape. You may add spells known by touching a willing or unconscious creature and making an Intelligence check (DC10+(half spell level)). If you fail, you may not try to learn any spells from this creature again until after a long rest.

Your spells known start at six and improve by two every level (without learning spells from other casters) other casters, as usual.

You may not have necromancy spells.

Casting
You do not prepare spells like a wizard.

At the beginning of the day, you may cast any spell you know and which you have a free slot for. Howver, this goes towards your allotment of Unique Spells Per Day. (see table)

Your spells slots remain the same.

You may cast a spell in various numbered spell slots and it still counts as only one against your unqiue spells per day, because a fireball is a fireball regardless of whether it is using a 3rd level slot or a higher one.

All this means that the Erudite starts the day incredibly flexible, but becomes less and less so every time she casts a different spell. Her unique cap becomes an interesting resource to manage.