Quote Originally Posted by Saph View Post
Alternately, take a Very Old Brass Dragon - they have CR 19, 28 HD, and a caster level of 13th. He can have 16 ranks in Spellcraft as a cross-class skill. Give him two Sorcerer levels and give him 6 more ranks in Spellcraft each level. He now has CR 20, 30 HD, a caster level of 15th, and enough Spellcraft to qualify for the Permanent Emanation feat.
If I'm doing my reading right, Sorcerer levels count as associated for a dragon with innate casting. So that one runs over CR...that's why I proposed a pair of Wizard levels.