The math of this build is quite confusing
So lets scrap the old build and see if we can get dual 9's or 9th level arcane and divine spellcasting in as few levels as possible
Researching various builds online built around the Mystic Theurge prestige class we get this build
the 12th level build is: Wizard 5/Mindbender 1/Ur Priest 2/Mystic Theurge 4
at this point we have to read the flavor text of each build and somehow put all these variables together, note there is ALOT of variables, but since its basic algebra its not too hard to follow
lets start with Wizard
a 5th level Wizard has: +2 BAB, +1 Fort, +1 Ref, +4 Will, a Bonus feat, and 3rd level Spellcasting
in order to add 1 level of Mindbender, you need some skills which are easily achievable, a use of a spell, and arcane caster level 5th...so far we meet the pre-reqs
in addition Mindbender adds: +0 BAB, +2 Fort, +0 Ref, +2 Will, Telepathy at will, +1 level of existing arcane spellcasting class
Those +2 Fort and +2 Will will be the needed pre-reqs for Ur Priest
So now we cast as a 6th level wizard and we meet the pre-reqs for Ur Priest
To be clear, lets presume we start with a 16 Intelligence, We are a Human Paragon, so thats 24 skill points at first level as well as 6 skill points per level, again easy math but providing it here cause there are a lot of skills to take at this junction
We have at least 4 feat slots available of which 2 are needed for additional requirements for Ur Priest
So skills are done as well as feats for qualification into Ur Priest
then we look at a single line that really over complicates things, "To determine the caster level of an ur-priest, add the character's ur-priest levels to one-half of his levels in other spellcasting classes. (Any levels gained in the cleric class by an ex-cleric don't count.)"
now the algebra begins
at this point we have a Wizard 5 / Mindbender 1 / Ur Priest 1
Mindbender bumps the Wizard to 6th level spell casting which is still 3rd level spells
The Ur Priest Casts Divine Spells so we get to figure out what level the Ur Priest casts at
Since we have an established 6th level wizard, we take 1 level of Ur Priest and add ( 1/2 of 6 = 3 ) so we have a 4th level Divine Caster Level
Reference: Wizard 5 / Mindbender 1 / Ur Priest 1 Arcane 6 / Divine 4
Since we are hoping are math and algebra are still corrrect we continue with the logic and add a second level of Ur Priest
Reference: Wizard 5 / Mindbender 1 / Ur Priest 2 Arcane 6 / Divine 5 ( 2 + ( 1/2 of 6 = 3 ) ) ( 2 + 3 = 5 )
Finally we end up with Mystic Theurge
Reference: Wizard 5 / Mindbender 1 / Ur Priest 2 / Mystic Theurge 1
The Mystic Theurge adds an Arcane Level to Wizard
The Mystic Theurge adds a Divine Level to Ur Priest
Now we re-calculate
Wizard 6 / Mindbender 1 / Ur Priest 3 / Mystic Theurge 1 Arcane 7 / Divine ( 3 + ( 1/2 of 8 = 4 ) ( 3 + 4 = 7 )
Arcane 7 / Divine 7 i think a double bump has been added due to Ur Priest Math along with Mystic Theurge Math
In any ways we add 6 more levels to achieve a level 15 character
thats: Wizard 5 / Mindbender 1 / Ur Priest 2 / Mystic Theurge 7 15 levels
The Wizard gets 1 from Mindbender and becomes Wizard 6, then 7 more from Mystic Theurge and becomes 13 Arcane Caster
The Wizard also puts 7 Levels of Mystic Theurge into Ur Priest making it Ur Priest 9
We do the math to determine Divine Spell casting and we get, 1/2 of 13 = 6 + 9 = 15th level divine
Arcane 13 / Divine 15
I still think my math is off
but i think i did a reasonable job of explaining this
i am still unclear how to get dual 9's by 20th level but i think this is at least 9th level spells at 15 with a few more tweaks
MAIN QUESTION:
is there any other way that you see how to get dual 9's faster?
-thanks-
Michael