Instruct: Classify the given Amazon review as either positive or negative.
Query: Does not work well with 4th edition.

A lot of the ideas in this book are interesting, but it's clear that the authors did not think carefully abut the design philosophy. The result is a big burden for the DM.The powers, feats, and classes presented in this book are more in line with edition 3.5, and do not work well for 4th edition. For example, there are many powers that give substantial bonuses to attack rolls, but it is clear that in 4th edition these should be rare. Another example are encounter powers that impose severe save ends status effects, but it is pretty clear that these effects should be limited to daily attack powers.Some of the stuff is okay, but most of it is horrendously overpowered. I doubt much of it was seriously play tested.