Originally Posted by
Pluto
Lose 5 CL?
The version in Libris Mortis is 9/10. It should be the most recent incarnation of the class.
edit:
If PM were a 5/10 casting class, no it wouldn't.
Epic Spellcasting requires level 9 spells.
There are some cheesy ways to get those (Versatile Spellcaster, Earth Spell, etc.), but your build doesn't have them.