healer princess or wizard prince

The healer princess special ability will unlock at level 10 and it will be a instant heal to all troops on the battle field

The wizard prince will cause a fire ball rain for 5 secons and summons 1 wizard at level 5

You should also add some dark troops hearos like a witch dutches or a golm lord maby a minion master

I like the sound of these ideas as an attacker but hate them as a defender, so they may be a little overpowered??