Abilities

To equip a unit with abilities, tap the Equip button on the unit's details screen and then tap the Abilities button to switch to the Abilities tab.
By equipping abilities you can boost a unit's parameters, or enable them to use certain magic and specials.
The number of abilities that a unit can equip depends on the unit's type and rarity.

You can tap on each ability slot to select from a list of equippable abilities.