lol I remember Pun-Pun. Wasn't that the kobold who could throw a boulder so big he could destroy a planet?
Well, Pun-Pun
coulddo that, but he could do anything that D&D allows, so that boulder throwing isn't anything special for him. I mean, he could fart so hard he'd destroy a planet, or the universe, really. And he could have already done it and maintain a simulation of reality.
That boulder thing is the Hulking Hurler.
http://www.dandwiki.com/wiki/War_Hul...aracter_Build)
It can throw 50 ton (over 100k US units) projectiles, doing on average 2k damage per round. When munchkined, it can throw about improvised ammo weighing up to 2,8M US weight "units". That's about what a sequioa tree weighs. Yes, that centaur will have a hard time getting their projectiles inside places, but in the field, oh yeah. Also, if they can purchase a quarry, then they can just lob about 400m3, that's a stone cube with a 7,3m edge.
But that requires 20 levels to pull off.
Pun-Pun, of course, can throw arbitrary amounts more at lvl 5. In fact, they can have any ability ever written in a D&D 3rd edition book as a supernatural ability and ability scores that are, in fact, arbitrarily high, so can throw about planets if they want to.