Healing is the act of replenishing a unit's health points by a variety of methods, including regen effects and lifesteal.
Healing can be replenished in two different ways: through normal healing and lifesteal. Both healing and lifesteal can be increased, for an example: those who have 
Oracle will benefit from 
Holy Healing and spell vamp's increased healing.
List of normal healing[]
Angela's 
Love Waves- Aamon's Invisible Armor
- Alice's Blood Ode
- Alpha's Force Swing
- Argus's Warmonger and Eternal Evil
- Aulus's The Power of Axe
- Balmond's Bloodthirst
- Bane's Ale
- Barats's Detona's Welcome
- Belerick's Nature's Strike
- Carmilla's Crimson Flower
- Cecilion's Bats Feast
- Dyrroth's Wrath of the Abyss
- Estes's Moonlight Immersion and Blessing of Moon Goddess
- Faramis's Vicious Retrieval
- Franco's Wasteland Force
- Faramis's Cult Altar
- Floryn's Sow and Bloom
- Gatotkaca's Steel Bones
- Gloo's Split, Split
- Guinevere's Super Magic
- Gusion's Dagger Specialist
- Hilda's Blessing of Wilderness
- Hylos's Glorious Pathway
- Kadita's Thalassophobia
- Kaja's Wrath Sanction
- Khaleed's Quicksand Guard
- Khufra's Spell Curse
- Ling's Defiant Sword
- Lylia's Black Shoes
- Masha's Life Recovery
- Minotaur's Motivation Roar
- Minsitthar's Mark of the King
- Nana's Molina's Gift
- Rafaela's Holy Healing
- Sun's Simian God
- Thamuz's Cauterant Inferno
- Uranus's Radiance and Consecration
- Valentina's Primal Force
- X.Borg's Firaga Armor
- Yu Zhong's Cursing Touch
- Zilong's Dragon Flurry
Lifesteal healing[]
Additionally, lifesteal has a healing effect that is a percentage of the type of damage that spell vamp, magical lifesteal, or physical lifesteal causes.