Since seeing the trailer for [X-Men: Apocalypse](tag:1194267), there's been no doubt about who the four mutants Apocalypse will make his horsemen are: Storm, Angel/Archangel, Psylocke and Magneto.
Now, the big question is how powerful can Apocalypse actually make these four? So far we've seen Storm and Archangel looking pretty powerful, and I can imagine we will see Psylocke kicking some serious ass judging from the training Olivia Munn went through to prepare for the role. But the real question is Magneto. Already an incredibly powerful mutant without added power, we have to imagine that with the extra boost he will become a terrible force to be reckoned with. And judging from a piece of concept art just released, that is a correct assumption.
We can see what is meant to be Apocalypse, Psylocke and Storm in the frame here, with Magneto doing some serious destruction around them. He has torn apart a building, in addition he's lifted an incredible amount of material there, and it looks like he's barely even straining to do it from this angle. Magneto has always been a serious danger, one of the most powerful mutants of all, but this is even worse than that. I fear for the X-Men if they have to deal not only with Apocalypse, but with Magneto at this level of power as well. That's not even to mention the other three horsemen, who are no slouches.
In short, what I'm really trying to say is that X-Men: Apocalypse is probably going to be the best X-Men film yet!