Mutant 6* r3 rank up help
The day has finally come and this will be my 2nd r3. I have been pretty lucky to land some good champs in the mutant class. I just formed a mutant t5cc and want to get some input. I've only completed Act 6 but haven't started Act 7. I've gone through the Abyss once and still have some Variants to explore.
Who would you r3?