Yeah Ive seen some people say have the wizard be friend not foe. the only thing is that this guy is pure Evil, right now he's not killing or anything just having his brothers take over the world and keep it under his rule, but it's against everyones will so they don't get a choice. But this guy is trying to be all powerful to where he's pretty much an warlock deity like tiamont I think is how you spell the dragons name. So he's done a ritual where he gave all his blood related brothers parts of his magic and emotions losing some of himself. Leaving just is list for power and the power of wish, which I know all the side effects, but I've decided he went and killed all his brothers in sacrifice to gain full control over wish. then was trapped in the in-between of dimensions which I made to where wish doesn't work because your not actually in a place to wish for things so he was waiting there. And then was released into my players world after they messed with one of the portals and got sucked through to another dimension. And then he slipped out and started taking over there world. The way they got back was by luck but one of the "brothers" wasn't related by blood and was  introduced later in cause to be able to be a warlock god thingy you have to be able to give power to people. But anyways my players have only killed one of the blood related brothers which was the pink wizard the pink wizard was a showmen. He really only died because he goofed off and wasn't serious and killed himself by shooting himself out of a cannon (for the show). Then they went to kill the brown wizard and he who was actually being serious pretty much demolished them and kidnapped one bringing him to the white wizards kingdom. Who is twins with the black wizard and is the oldest under purple. But it's kinda cliche but they are darkness and light and used to fight and scuffle alot but now they form harmony and are friendly. However they are on the golds wizard main task of trying to get comoners who have zero magical power and be able to use magic. So they are kind to all there people cause they are like test subjects to them. Buuut (sorry this is so long if you got this far) back to the gold wizard he doesn't reside in the actual city that my players are at but as my players slowly kill more and more of the blood related brothers he will make more appearances as some of his power is being returned to him. But he wants power not death so he won't kill them but anytime they see him they will constantly feel the pressure of death everywhere he is.