This piece is called "We are NOT taking the wizard." by artist Matt Rhodes. Mr. Rhodes writes:
"Sitting around a camp fire, my friends and I talked about wizards. Wizards, if they were real, would be the worst people. Dabbling in all sorts of grim abominations for dubious ends. They'd be the last people you'd ever hire for a quest, and then only in utter desperation."
Big thanks to Evan Elkins for sharing this piece with me and reminding me of the existence of Wizardly Wednesday. It kind of got away from me for a few weeks.