Spreading Spores is a Circle of the Spores Druid class action. While 
is active, you can create a cloud of spores that deals Necrotic damage to any creature that walks through or starts its turn in the cloud and fails a 
Constitution saving throw.
Description
Seed an area in deadly spores that deal 2d8
Necrotic damage per turn to all creatures that inhale them, except you and your allies.
The spores disappear when Symbiotic Entity ends.
Properties
- Cost:
-
Bonus action - Damage:
-
2d8 (2~16) Necrotic damage - Details:
-
Range: 18 m / 60 ft -
AoE: 3 m / 10 ft (Radius) - CON, negated Save
Condition: Spreading Spores
- Affected entity is inhaling dry, throat-closing spores that deal 2d8Necrotic damage per turn.
How to learn
Classes:
- Class level 10: Circle of the Spores Druid