A little while back I was playing in a Play-By-Post Arena game. All the players there are optimizers, and because my warshaper idea didn't fly (apparently in this game they only get one extra body part rather than an unlimited amount) I simply put together a glaivelock quickly and started to fight, and I can honestly say the only thing that kept him in that fight for so long was his damage reduction. This got me thinking, hey, wouldn't it be awesome if I had a character built around making my opponent useless?
Unfortunately, I'm not the best optimizer in the world, and that has prevented me from doing really well in the arena, and my characters keep dying. Thus, I'm asking here, could someone please tell me what a good way to make a build like this is? Essentially nullify the enemy - Damage reduction, unbeatable Spell Resistance, or anything that makes it so I'm almost unkillable/stops the enemy from doing anything
As far as my allowed sources go, pretty much everything except for the Fiendish codex books, Dragon Magazine, and BoVD are allowed, but I'm only allowed to use up to four books for a single character (6 books if he doesn't have a Level Adjustment). As a final note, all characters start at level 10, and are gestalt (with one side of their gestalt holding their LA if they have any)