DM horror stories (warning! rage inducing)

[Crake]

Shouldn't a DM at least mention beforehand which sources are allowed and which are not? And secondly, this basically means your wizard reached level 7 or 8 without ever casting any spells... That's either the most parasitic-to-the-rest-of-the-team wizard, or the most bad-ass wizard i've ever heard of.

I think the idea is that he's been casting spells from that book the whole time, but when the DM decided he didn't like a single spell from the book, he changed his mind and banned the whole think, aka the wizard's entire arsenal