broll said: Personally I don't see a lot of benefit in putting ISO into them early unless they are top tier. Do that with some of the best characters, but for the vast majority I wait till their crash comes around and try it at 70. If that seems unwinnable then I bump them up to 100-125 and try again. Rinse and repeat until I win or the fight seems winnable and keep trying.
aa25 said: From what I heard, the magic number of 10 covers is mostly for 5* who benefit from levels more than covers. At 10 covers, you can level them to ~400 which is the point where scaling start to spin out of control. For 4* and below, they gain their damage outputs from covers more than level (until they are champed). Many 4* powers are borderline useless at less than 5 covers (there are exception, of course.)As for CotT, it is a matter of having the 'right cover(s)' more than having 'high enough level', imo.