I'm working on getting to where I can solo the final guy on my Champion (a bit harder than with my warlock, who burst it down quickly) when I noticed that 4 stones appear when you fight the Gargoylem.
There are two in the back that have like these black balls of energy hovering over them that are called "Eulogy Rubbing" when you mouse over them. Then there are two opposite of the black ones, exactly alike, except they have a purple energy hovering over them and are called "Balanced Inscription" when moused over.
Does anyone know what these do?
Edit: I'm trying to find out ingame myself, but I don't survive long enough to see what they do when activated.