30+ New Dragons (more true dragons than the draconomicon)

[Zaydos]

Mostly it is just passives and one or two abilities usable once per five rounds. Passives can be about balanced with feats or such, and the on use abilities are more like maneuvers from ToB, or really low powered spells. Otherwise, the fluff is the hardest.

I remember the article on WotC's website on how to make them; balance the passives against warlock invocations and the 5-round abilities should be on par with an equal level wizard's highest level spell... I have always been dubious of that article.