"Hmm, a being like you is the only one that will not suffer upon binding with myself. It is a sad moment since I do not intend to leave this world just yet. I desire to gain my own being before I am to ascend to the darkness elemental plane..." Shade had been in deep contemplation while looking at Mordant.
This was the only being that was able to properly handle the insane amount of darkness elemental mana that Shade had. Even then, it would come at a high price for Mordant since he was still not able to handle a grand elemental spirit that had incredibly dense elemental mana stored over the course of thousands of years more than Mordant had lived.