User blog comment:Atmey/Impregnable Mail/@comment-207.102.35.214-20130107171801/@comment-3529242-20130108001700

Well, it can be made to be built from ruby crystal, but it builds to many things already, the 8% bonus health should somewhat close the gap.

Yes it is powerful, it should be the ultimate tank item, just like IE and death cap on carries, personally I still find it somewhat lacking.