Exos Heroes First Aid is a passive skill that allows a hero to heal an ally whenever their HP drops below a certain threshold once per caster’s turn. It also allows the caster to gain additional mana quickly if their current health meets a certain threshold too. There are 3 versions of First Aid with increasing benefits. First Aid 3 is default for Fated Hero, First Aid 2 is default for Legendary Hero and First Aid 1 is default for Rare Hero. Champions below Fated Tier can perform “Unleash Potential” to upgrade their First Aid to a higher version.

Version	First Aid Skill Description
3	Grants Heal (100% of Attack) to an ally if they take damage and their health drops under 20%. Gains 1 mana if the caster’s health is less than 20% when triggered. Gains 1 mana if the caster’s health is more than 70% when triggered.
2	Grants Heal (100% of Attack) to an ally if they take damage and their health drops under 20%. Gains 1 mana if the caster’s health is less than 20% when triggered.
1	Grants Heal (100% of Attack) to an ally if they take damage and their health drops under 20%.