Discussion about mana troops has been beaten into the ground, but my take/summary is:
Getting a red and a yellow mana troop to L11 for Gravemaker and Jackal (if you have them) is achievable and awesome. Now they fire after six tiles matched). WOOT! I just got them both to that level too!
Getting a mana troop to L17 takes a LOT of feeders, probably playing the game for months to get feeders for free or spending a few hundred dollars on epic troop pulls, but it will help your average mana heroes a lot 9 tiles / 3 matches to charge)
Anything beyond that is less helpful and more expensive, and you will probably get more value for your feeder troops leveling up the crit troop instead.
As I said, this has been beaten to death, but here is the interesting question …
I usually raid with 2-3 heroes of the same color. Occasionally monochrome teams. I do similar in hard event levels. When do I start working a second 4* troop instead of trying to take my top one higher? Or maybe even a third 4* troop?
Taking a 4* troop from L11 to L12 takes 1825XP. That would take another troopfrom L1 to L4.
Taking a 4* troop from L11 to L17 takes 12,075XP, enough to go from L1 to L12
Since I’m NOT expecting to max any 4* troops in my lifetime playing this game, what is my best strategy? Or what have you chosen?