I originally posted this in the violations section, but that has not been responded to by anyone, so hopefully it will be responded here. There have been multiple times in arena where I have attacked an enemy, and during my attack they heal. The heals also change amounts almost randomly, and will heal them even if I only did shield damage. I first thought this was the result of hackers, but it has been happening so much that I now think it is a glitch, possibly with an artifact set or a mastery. I read over all the masteries to see if there was one that did this and I could not find one. The artifact sets also seem to be different. Initially I thought it was only lifesteal, immortal, and regeneration but I recently went against someone with no heals who healed every time I attacked them. If this is a correct mechanic in the game somehow, please anyone respond to me. I sent a report through the game, but the auto response makes me believe it wasn't even read.