How to make an metamagic focused epic caster interesting?

[pabelfly]

I'd start by looking at the Raising Caster Level thread: https://forums.giantitp.com/showthre...g-Caster-Level. There's a list of spells in there that have uncapped damage and uncapped effects. Since you can have a caster level of around 50 solely through class levels, there are some powerful spells in there that might not normally merit consideration. Work out if there are some spells in there you'd like to build around. It would make this thread a lot easier.

Also, spells that are an hour/level now last for two days, and 10 min/level spells now last over eight hours. If you want to do a Persist build, you'd only persist min/level spells.

Second, I would consider getting some X stat to Y on whatever build you come up with. Even if you pick a stat-neutral race like Human, you could easily end up with 40-50 in your main stat, or a +15 to +20 modifier, even without touching epic items. That would be really useful on any stat - Saves, Initiative, AC, whatever you can manage. Even your secondary stats could easily end at 30, or a +10 modifier.

Getting 20 BAB, or close to it, deserves highlighting, although it was mentioned before. Regardless if you want to hit opponents with a weapon or touch attack spells, that BAB will be really useful, if you can manage it.

Last, as mentioned before, consider using some races and templates, even if you can't buy them off. Some races have extremely powerful abilities that would be worth giving up a few class levels if you can get your main build sorted, and the optimization adage of not losing caster levels doesn't really apply to you.