Ritual epic spells require large groups of moderate to high level casters which must be really hard to gather but if you can do it you should be able to pull off some powerful effects. Each caster can only contribute 1 spell to the epic spell and if you do the day casting times if even one wizard leaves or is knocked out then that's the end of the ritual. If wizards could dump 200 spell levels each into a spell then yes it would be very easy to cast DC 1000 spells.
I said I liked the cleric smackdown but felt it was overly specific and expensive which no one disagrees with.
I said I liked the cleric smackdown but felt it was overly specific and expensive which no one disagrees with.
This isn't nearly as impressive now, and requires bumping things up to level 27, but it's still far more insane than a level 27 character deserves to be. So, fortify will last 20 hours. We therefore need to lower casting time to something reasonable - 10 minutes will do, we can only cast 3 a day anyways. This increases all these DC 0 spells to DC 200. After removing the Foresee seed (not necessary any more) we're at 183. Now let's say we want it so the first one he casts lasts at least a month after he finishes the last one, enough for a good healthy dungeon crawl or war campaign. A liberal dosage of "Increase duration 100%" will increase the DC by +130, putting us at DC 313 per spell so far. Now, being possible the second most important stat for many cleric builds, let's assume he's managed to scrape together a 30 charisma before all this stuff is applied. So, for one of his non-epic feats, he takes leadership, then at 24th and 27th he takes epic leadership and legendary commander. His leadership score is 37, so thanks to legendary commander, he can have a total of 770 followers of 3rd level or higher. Let's say they're all adepts (who count as 2 levels higher than a normal follower, that's why we're only concerned with 3rd level and up). Each of them contributes a 1st level spell slot - they won't complain, all you're asking of them is half an hour of casting a day. DC is now.. -457. Looks like we can throw in some more fun. 457 points is good for an extra 190 days of duration (assuming 20 hours base for fortify, things like armor will last longer), or an extra +228 to all your enhancement bonuses from fortify, or increase the non-enhancement ones by 76. Since they're basically free (no one's really disputed that part yet, right? 
) go ahead and research both the longer lasting and way-too-strong versions of each. 
I'm not even going to try and do the calculations this time... for the uber-powerful, month-long versions, I think his ability scores come up above 800. 
An ability score of 10 would become roughly 1700+. This is assuming, of course, that his 26th level cohort wasn't also a leader of some repute, with a thousand of his own adepts willing to spend half an hour a day casting. 
