Yet, technically, 'stolen' doesn't seem to be defined. One could assume that "Thief" can steal items, but Thief's text isCard Erratum: Replace "Ignore any effect that would discard this item" with "Cannot be stored,
stolen, or transferred."
So, if a company with Wizard's ring is successfully attacked by a thief, a Wizard's ring can be discarded, right?.. For each successful strike, an item held by the defending company must be discarded (...)...
Otherwise, what is meant by stolen?