Oh, I didn't think of that, steal the enemy weapon/drop a weapon trick.
We'd just have to ask zanz to somehow prevent that from working, so that even if you did that, the enemy would still get their weapon back, because that is not an intended use for this card.
Or, if that's not a possibility, I could make it copy the item for 1 turn instead of steal it, but then you wouldn't be able to steal shields to get past them, which would be a nice use of this card, but maybe overpowered, since it effectively gets rid of the shield if you use it every turn.