Bathing in sexual satiation--what a good idea it had been to transform Chuck into an ogre, a species renowned for the virility of its males--Mystra turned her attention to other things, one minor matter, Chuck's wish, and one major, the transformation of earth into a world full of magic.
Mystra had reserved to herself the means of fulfilling Chuck's wish. She didn't want to just turn some random person or thing into an ogress, though. At some point magic had to take off in this world outside her own direct actions. Earth needed to be a world of spellcasters, magic items, and curses. So Chuck's potential girlfriend needed to be created indirectly.
Mystra had teleported to a shopping mall with the plan of creating magic items in a place where items circuated rapidly, and maybe recruiting some wizards. Ah, a smart phone store.
Mystra laid an enchantment so that anyone who made a call on one of the smartphones they sold would be transformed into an ogre. The first ten would be females, and the first one of those would have a geas to go to Chuck's apartment and offer herself as a girlfriend. If he rejected that one, the geas would transfer to the next created, and so on. After the first ten, the genders would be assigned at random, regardless of the transformee's original gender.
So that was out of the way. What next?