A greedy, lazy, Wizard named Thanee was in the Magic Item creation business. One day she watched as an old Loremaster colleague (E. Noah) Called an Erinyes to gain information. When she saw the demon's blade she realized something invigorating.
Instead of spending all that time in the forge with that smelly dwarf Wulf (that pounding alone gave her a headache and Wulf kept coming on to her) she'd simply transport creatures to the material plane. After "Confiscating" any equipment and gathering whatever information she could, she'd simply Banish the outsider back to its home plane or Disintegrate it. Either way a quick artifact or two without a dwarf commenting on the "Gifts granted her by the Forge Father."
Unfortunately, she underestimated how quickly the denizens of the lower (and upper) planes are able to gather their forces and, forcibly, put a stop to such activity. After falling to three Balors, a Pit Fiend, 6 Retrievers, 2 Erinyes, 14 Imps, and a Sword Archon her story easily found it's way into many a beginning textbook (So, You Want to be a Wizard? and religious manuscript (Outsiders, the Dos and Don'ts).
In fact, her name has become synonymous with irresponsible and/or stupid Wizardly practice, "Watch it boy, you'll wind up worse off than Thanee."