Halo of Spores

At 3rd level a cloud of glowing spores radiates 5 feet out from your body. Any hostile creature who enters the area for the first time or starts its turn there must make a DC15 Constitution Saving Throw or take 1d4 necrotic damage, or half as much on a successful save. You are healed by an equal amount to the damage dealt this way.

Damage dice will increase by 1d4 at 6th level, 9th level, 12th level and 15th level to a maximum of 5d4.

This feat takes a bonus action to activate, and the effect lasts one minute.
Can be used twice per short or long rest.