As most of you know, your mags don't stop evolvong after level 50. It may seem a little random, but here's how it works: your mag's evolution relies upon it's stats, and which is dominant (only between mind, power, and dexterity). Every five levels after 50, if the stats are not in the same order that they were in before, the mag will change. For example, say your mag is level 55 and the order of its stats are Power, Mind and Dexterity (from highest stat level to lowest stat level). If at mag level 60 the order of stats change (say Dexterity gets a higher level than Mind, or Mind becomes higher than Power), your mag will evolve. If the order remains the same, your mag will remain the same.
(I posted this on the general board, before realizing it was more appropriate here)
