Can we get a pop-up window when using the stone if the requirements are not met like for example you used a refresh stone on a copper or above modifier, instead of consuming the stone that doesn't change the modifier and disappear we should at least have a notification or window that will say the requirements are not met or say something about what level/kind of stone to be used or something along those lines.
Also if possible to have cancel or back button when using the stone so we are not being forced to use it if we change our mind.
I don't think stones have requirements they just fail a lot and explain how you are forced to use them?