Mithrandir Falls.

“Understand, Frodo, I would use this Ring from the desire to do good. But through me, it would wield a power too great and terrible to imagine.” Frodo wasn’t the only one who failed: Artist Benjamin Collison imagines a Gandalf the Black, in thrall to the One Ring. Rather than a simple wraith, I think he’d be more of his own unique evil, a la Fritz Lang’s Galadriel. But to each his own.