AAARG...Disappointment with Clay_Master

I started out playing DII with necromancers. Ever think about how powerful a Clay golem would be with max in IM, golem mastery, and clay golem, since clay is the only golem whose hit points go up without golem mastery? Almost 4000! Imagine my letdown when I reached level 12, put my 1st point into golem mastery, and realized that GM only adds 20% life to level 1 clay golem, no matter how high you pump CG for hit points. ... that variant fustrated me enough to quit the necro for a while.
Lesson: don't try this at home.