Why is the enemy use the ability when was not turn


I don’t know why the enemy was able to used ability to attack when attack time not show “s” and show mana not full.
The mana bar of enemy shown half that were able to used ability to attacked my hero.

Same. I got hit many times… and it was not the other teams turn. It killed all but 1 of my heroes. Not that high of a level either.

Its called riposte that hits you on your own turn. Casted by Cyptian, Boril or Elena for example. Or what hero was standing in the middle? I guess it was Boril or Cyprian.

It was not Boril or Cyprian.
My heroes were been hit by enemy oh my own turn when my trophy are more than 2000.
And then the puzzle most distributed until difficulty arrangement every turn.