The healing spell heals your troops for an amount of time (12 seconds). When deployed it forms a ring, all troops in this ring (air and ground, even the healer!) will heal with a maximum of the total healing of the spell (depends on spell level).
The healing spell can only be used in attacks. Make sure your troops are staying in the circle for a while, troops that move outside will not be healed anymore.
If you use a meat shield the healer can be effective to keep it alive for a longer time. It can also be effective to heal low health troops like the goblin or barbarian. It keeps them from being splashed.
You can deploy multiple healing spells on top of each other, it will increase the healing effect. You an also combine it with the rage spell.
Healing spell total healing and upgrades
|Level||Total Healing||Healing per Pulse||Cost||Upgrade Cost||Upgrade Time||Laboratory Level Required|
Healing spell stats
|Radius||Number of Pulses||Time Between Pulses||Time to Create||Spell Factory Level Required|
|5 tiles||40||0.3s||30 minutes||2|