Which 4* Mutant Should Get Rank 4 First?
Quick summary of my overall game position first. I’m summoner level 39, cleared acts 1-3 of the main story (only act 1 has been fully explored though) and need some champion strengthening before I can push on further. Have a reasonable 4* collection for playing just over a week, including at least one in each class, and at least one in each class at at least rank 3, level 30. Only one higher at the moment though is a rank 4, level 40 Dr. Doom.
I could do another rank 4 now. In most classes I have an easy strong favorite, with little or no competition (or I only have one 4*). Mutant is the only one I am wrestling with. At first was using Pyramid X Storm, who I got almost right away and helped speed through the earliest content. More recently she has been replaced by Apocalypse. But then today I got a 4* Magneto too (‘classic’ red costume version). Now I am wrestling between Magneto and Apocalypse, Apocalypse is ready for rank 4 immediately, Magneto is rank 3 but needs more leveling before I can rank him up.