So we have rage wich berserk the allies, healing to heal them, how about giving them quite a moment of invicible for a short period, here is a detail

invicible spell

last :3sec (+0.5 sec every upgrade to level 5)
radius :4tiles (slightly smaller than healing and rage)
cost :25000 elixir (+2000 every upgrade to level 5)
Description :
The thin smokescreen appear surrounding allies under its effect and causing them remain invicible for a short period. The invicible allies won't be targeted by any defense however still affected by damages from splash or traps, also the last projectiles that targeted them before they vanish will still hit them even after the troops is vanishing. This spell affects only ground troops to prevent it from being op.

In other words this spell is similiar to archer queen's royal cloak, but instead of vanishing her and just archers, this spell works universally to all ground troops. I see this idea is implemented in a lot of games, but i think it'll be fun to have this feature in coc universe too. Also i'm sorry if this idea has been talked before but it is something new to me. So how do you think guys, do you like it