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Skeleton Traps set to air mode can chip away at a Healer if no other troops that can target air are nearby. While the Air Bomb will usually not be enough to kill a Healer, the Seeking Air Mine will prove fatal for almost all Healer levels. Using Balloons will get rid of any SAMs lurking in your preferred spawning location. A Healer can trigger air traps, including the Seeking Air Mine, so be careful when deploying them.For this reason, it is not advised to use too many Healers on the same target as the healing efficiency will decrease if they are massed on one target, like the Archer Queen. The stacking effectiveness begins to decrease after 4 Healers and decreases drastically after 6 Healers. As of the December 2015 update, the effect of stacking multiple Healers to heal the same target is reduced.You are able to heal a Healer with a Healing Spell.If at any point in the battle all of your non-Healer troops are killed and you have no more non-Healer troops or Lightning Spells/ Earthquake Spells to deploy, the battle will end, even if you have Healers deployed that are still alive or non-Lightning/Earthquake Spells that are still in effect.An alternative to taking out the Air Defenses, doing a Hero Walk with a ranged hero will have sufficient range to negate the Air Defense.The remaining Air Defenses can be a problem so be sure to use a few more troops or spells to take it out. One strategy to get rid of them is to send an indirect attacker like a Bowler, Electro Dragon, Super Wizard or Super Archer to snipe the Air Defense before it can be of use. A Healer does not last long if she is in the range of an Air Defense, so make sure you destroy the Air Defenses first or otherwise occupy them before sending in your Healer(s).Only up to seven Healers can have an effect on a unit at a time. Each additional healer affecting the same unit after the fourth will have a reduced effect on healing the unit.
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Unlike all other troops, Healers are measured in healing per second (abbreviated as HPS stated in-game as "Heal"), rather than in damage per second.When defending as a Clan Castle troop, she heals injured Clan Castle troops, Heroes and the Skeletons from Skeleton Trap.If they have no target to heal, they will simply remain stationary even if they are taking damage. They are completely unable to defend themselves, and will totally ignore any enemy buildings or troops attacking them. Note that Healers will heal heroes at a reduced rate different from that of other units keep this in mind when using Healers with your heroes.Healers will also not affect any Siege Machines like the Wall Wrecker. Healers do not heal air units (other Healers, Dragons, Balloons, Minions, Lava Hounds, etc.), unlike a Healing Spell which heals every kind of troop.For example, if she has already locked on to your Archer Queen, she will not heal anything else until the Archer Queen is destroyed. She will heal the closest unit or Hero to her, regardless of how damaged they are. When the Healer is deployed, a pulsating circular aura appears around her.
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She is the only troop with no attacking capabilities, but can heal any ground troops.
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