[Graeme Dice]

I think that one of the best possible use of wishes is still probably for power, followed by magic power X 10, if you happen to have picked a VQ pretender and have strong dominion. She's far scarier decked out in artifacts with a defense of 40+ and the mirror images from air 10 than in her normally attainable state. Of course, this is hideously expensive, so you'd better have another reason to go for all that magic such as casting various spells.