One of the more creative ways I've seen this used was a rogue 3/wiz1.
He was scouting/spying on a wizard who was scribing a scroll, and he used mage hand to add a whole bunch of dashes of powdered ingridients to the ink while he was reading intently on a book.
The encounter later resolved when there was a face off with the group vs the wizard. The wizard brtought out the scrolll, tried to cast it, spell failure came in, boom. After that the wiz was not so tough to fight.
He was scouting/spying on a wizard who was scribing a scroll, and he used mage hand to add a whole bunch of dashes of powdered ingridients to the ink while he was reading intently on a book.
The encounter later resolved when there was a face off with the group vs the wizard. The wizard brtought out the scrolll, tried to cast it, spell failure came in, boom. After that the wiz was not so tough to fight.