Xander goes with it and used his powers.

Xander got a rush as Cordelia connected to the 'Hive Mind' as he knew what she knew. Including the actions and words of The Powers That Be. The fact the 'Forces of Good' wanted him to link up everyone on Earth, wanted him to use and enjoy this power...

'Well... Okay then. I was trying my best to not **** this, like when the love spell hit. It seems this is different. In exchange for using them for my benefit, I can use them to make things better when they world needs it. So okay' He thought before asking the members of his collective on how to get everyone into the 'Hive' as quickly as possible without anyone getting hurt.

Weeks Later...

The world was now 97-99.99% under his control and part of the 'Hive'. As mixture of spells and technology had made sure that images of him were seen by those who could see them. Could be heard by those who could hear him. Like how airplanes were able to spread a virus into a world wide epidemic, the media did the same with his power. TV, radio, internet, movies, even print pictures... With a blitzkrieg promotion, and the world fell.

Society quickly changed as their political, religious, social and other leaders became the same man, One Alexander "Xander" Harris.

One, he was given any and all mansions for his home. He was given whatever he desired, from swag and toys to the much needed food to refill his tank when he used his powers. In fact, now, Twinkies were food made only for him and his close ones. Gluttony was one of the two major ways he could regenerate himself when he used more of Jasmine's power. Discovering more then he had known and the former Power That Be displayed.

For example, he had heard the IQ of the mob was the IQ of it's least intelligent mind divided by it's members. The power of Jasmine and the Link, meant he could use the IQs of the most brilliant minds and access to anything any member of the link had to advance science or magic. Or even mix both science and magic. Which was making life better as many problems were being solved quickly.

There was also the second way he could recharge himself. For Gluttony did recharge him, so too did Lust in the form of sex.

True was, he didn't have a harem. He had harems!

First was his Fiancee harem, who would become his wives. Buffy, Willow, Cordelia, Anya, Faith, Dawn, Joyce, Jenny, and Tara.

Second was his Friends Harem, who were close but no close enough to be his brides... yet. Kennedy and Fred from Angel Investigations.

Third was his Celebrity Harem, basically a black book of hot female celebrities who would be willing to fuck at any time or place.

Then there was any other women in the world, but with the first three harems, he didn't need to use this pool often.

Fortunately he could heal not only wounds, but disease and wounds based on diseases, like those form STD. Meaning he and those he slept with were cured of them often by accident. He could only impregnate people at his whim.

which is where he was, in a mansion, with tones of prepared food, guarded by an army (made of slayers, humans and certain souled demons and others) with a harems of sexy women dressed to inspired lust and desire.