Well, my 20th level character in our “Shandar” quasi 3.0 game managed to take about 150 feats, was able to cast any kind of death or time spell up to about level 30 (at a minimum), had many thousands of HP, AC well above 100, and had divine abilities enough to smack around whole armies and put every standard DnD god out of business. But he was primarily a kick-ass warrior.
Of course, this was quite normal in Shandar, you were supposed to munch it foolishly. My GM took (still takes) a perverse pleasure in letting people screw themselves over with foolish mistakes.
We have one pair brothers who have this nasty tendency to blow away their PC’s. One of them decided to take a god close look at the Runes of God-Binding. as in, they were built powerful enough to bind Gods, permanently and forever, with no chance of escape barring help from the outside.
He started tracing the runes with his finger. After he got about 2 inches, he was sucked inside. Hell if a problem getting him out. Had t burn one of my mystic Godfire ability points to create a soul for the Godbinding runes and ask it to let him go. I wound up with an adoptive son, who happened to turn into a 10-foot wide emerald when he took a nap. I fed him enemy gods. 
The other brother got himself killed after the game was essentially over. We were trying to move the population off of one dying planet to another. Unfortunately, he tried a dangerous magical experiment that involved drawing on the mystic wards designed as a giant barrier against cannibal universes. He, along with his entire temple (he was a God) went up in a flash of light. Everyone laughed at him. He laughed at himself. In the next campaign, he did essentially the same thing 12 times. ironically, his divine powers revolved on his protege, who had spent much time and effort trying not to become a God. His reaction? :“Well $%#!”
For some other amusing highlights, I kept going around and killing undead Gods. They all thanked me for it. I got a date with Beshaba (she and Tymora along with a very few other managed to survive the collapse of Faerun which became Shandar) and got to witness a total conversion chain reaction.
Long story short - there was a city that was trapped in a permanent stasis field when Faerun popped the cork. We eventually dropped the field and evacced the citizens before they were taken as slaves. Now, we manged to do this by essentially thinning out the temporal stasis field inside. IE, the insides were working but there was still an impenetrable shell of frozen time. Later on one of our uber mages dropped the most powerful spell he could inside the thing (had to kill some REALLY nasty things). This was actually more heat that the stonework could handle. In about 3 rounds, the entire inside had melted, vaporized and expanded into raw photons all neatly contained inside the time field. We, thankfully, fled. Most of our enemies did not.
Eventually, we simply used it as a giant cannont (open a pickprick hole in the top) and shot the load at a passing universe who was trying to eat us.
