This wand is unusual because it can only be recharged once. It always explodes if you try to recharge it a second time; other wands have a chance to be recharged multiple times without exploding. It is not possible to wish for more wishes, so if you wish for another wand of wishing, the second wand will normally come cancelled, which is useless. There is a 10% chance that you will receive an empty recharged wand of wishing, from which you can wrest the final wish.