King Mikhail - "Explode a row. Deal 17 to all enemies. Deal 6 more if I am enraged."
Firstly, should the enraged extra damage be just a total of 6 extra damage or (as I suspect) be 17+6 = 23 to all enemies.
Either way the enraged extra damage is not happening. I have him on the top (+3 to all skills) and he does 20 damage to all whether enraged or not.
Easiest to spot is when there is only 1 troop left. Just does 20 - not 26 or 20+6
iOS - iPad Air 2