IMO, suddenly gaining health in a middle of a fight is not fair.
Now this isn't too much of a problem right now but it's still something I think should be talked about. Whenever you level up you gain a small portion of health and if you are running Dangerous Game you get %5 percent of missing health and mana on kills AND assists.
This is kinda annoying for those situations where, as a support you essentially give yourself to the enemy adc so that your adc can clean up....only for the enemy to gain a bunch of health from killing you and take your adc as well.
I personally do not like Dangerous Game, I'm not asking for it to be nerfed, I want it gone, but that's just my opinion.
I also think that, while leveling up should increase your max health, it shouldn't just grant you that health immediately