Healing immunity and healers

Im sure most of you know the AI can be a little dumb. To take advantage, if u inflict healing immunity against an enemy and they drop below 50%. Every healer will waste there turn trying to heal he/she who has healing immunity.

This just buys u more turns for your toons to get another hit in

I find this very useful in arena where everybody uses luminara. I just inflic healing immunity to there QGJ. Let luminara heal and then u take out QGJ

Of course this doesnt work if there team is using barriss