alright, so let me get this straight.

PHB, PHB2, MM 1-5, DMG, and DMG 2 are the only books that are allowed to be used.

From all other core books whatever ability/feat/class/etc that we would like to use must have one of the following words, "Dragon, Wrym, Drake, Reptile, Snake, etc (or any other kind of scaly lizard/reptile/snake like beastie)" are allowed.

So this allows: Races of the Dragon, Dragon Magic, Draconimonicon, and any other book with the allotted words in the title, while also allowing feats from books without it in the title like Gape of the Serpent (because it has Serpent) from Savage Species.

Very interesting. I am in to cook, although this will be... interesting.