Illuvials with a Nature affinity heal for 3 seconds when they drop below 50% health for the first time.
3 Nature Illuvials: Heal for 30% Max Health
6 Nature Illuvials: Heal for 50% Max Health
9 Nature Illuvials: Heal for 70% Max Health
Types of Illuvials that have the Nature affinity include Archie, Fern and Ador.
The Nature affinity can be combined to make the following affinities: Bloom, Spore, Toxic, Verdant and Wildfire.
Click Here for the Affinities List