few things that bother me here. Number one i dont see a game name or pass, so it seems to be with single player. The patch is right so thats good. But one glaring problem. Doesnt d'clone take the place of any super unique monster. A champion isnt a super unique...... my guess is its a hacked/edited image..
The real story on that screenshot, is that some people were playing around with the 1.10 Beta patch, and stumbled across the stats of "Uber Diablo" while playing with the .mpq's. Rumors flew around and people didn't know what he was supposed to look like, or if he was supposed to spawn like a "Champion" or "Unique" kind of Diablo. Some people modded the patch to include Uber Diablo with a band of Diablo minions (much like a unique monster spawns with minions, and those minions are tougher than normal monsters, giving you the "Champion" Diablos).
That is in Normal, and was a screenshot of the modded Beta.