This armor is pretty much same armor-wise to the Bronze Armor set. The poison resist helmet and piercing resist chest piece plus the overall set bonus is really cool.

The problem is by the time you kill enough Abominations to get a fully upgraded set you will most likely have enough iron to jump to the iron armor and bypass this all together. The poison resist helmet is nice, but if you are in a Crypt, you would most likely be using the light circlet from the Merchant, so it won't benefit you much.

Abominations, being tree creatures would best be found in the Black Forest. While the armor set is cool, I don't think it will be used much.