Huaneng not perfect overlap and hammer powder?
Even thunder hammer and blood sucking can be superimposed, but when the discharge is not only in the same way, the vampire, thunder hammer and dark out and ice eye can be superimposed, when only trigger thunder hammer does not appear dark or destroy ice eye effect. Ice eyes and Vampiric remote heroes can be stacked, because the ice eye is now a special attack against ranged heroes instead of serving.
It can be stacked because the loose ball is no longer serving, and the hammer is the touch service.