The simple question thread seems to be locked since I can't reply to it. So I'll ask my somewhat simple questions here.
What's the consensus on Unearthed Arcana Gestalt builds that do multiple multi-classing? For example someone who takes 5 levels of Wizard on one side, and takes 2 levels of Barbarian, and 3 levels of Fighter on the other? Are there multiclass penalties? What happens as they progress? If the character NEVER takes another Barbarian level, do they incur multiclass exp penalties?
I had another question about the combination of the Improved Trip and the Knock-Back feat from Races of Stone. If I chose to Improved Trip someone (making a touch attack, then an opposed trip check, then another attack when they're down) does that last attack allow me to activate Knock-Back and attempt a Bull Rush attempt to move them away? Also, would all of this allow for Dungeoncrasher from Dungeonscape?
I'm basically thinking that if I'm facing an enemy with his back to the wall, and I make a trip attack, he's dropped prone, then I get a free attack, if I hit then I get to bull-rush from Knock-back, and if I succeed I'm knocking him into a wall for extra damage due to Dungeoncrasher. Is this all correct?