I have seen attacks where 3 or 4 healers protect queen. Queen doesnot lose any helth at all throught the attack? So does it means if one has enough healers and take out air defenses early somehow, troop(like queen) will last till the end?
In short, as long as even a single healer is alive on queen, is she immortal?
Edit:- How about healer on BK or other troops?