I don't know. Krimm, Fax, Vorpal Tribble, Zeta Kai and Demented One are definitely some of the largest homebrewers, and they continually turn out good stuff. But, there are a large number of smaller, hidden gems all over the place. I'd find it hard to choose anyone to be even in a top 10.
On topic: Good work Krimm, though I'd likely give it immunity to at least Stat damage, otherwise it would be a bit too easy to take down.
Damn. I forgot Fax and Zeta Kai. Hmm. Let's make that Top Five, then. Maybe add the Djinn as well.
"Après la vie - le mort, après le mort, la vie de noveau.
Après le monde - le gris; après le gris - le monde de nouveau."