The answer is warlocks. There's a certain move that makes them lose their health to heal their demon. Not sure what it's called. A warlock on your team keeps spamming that move while a healer spams heals (usually from the heal hut so as to continuously regenerate mana).
Gratz Mertse, nice to see absorbs inc on your recount, gives it a truer picture of how well you did, and nice you didn't have to get any locks to help boost it with lifetap