Prerequisite: Swarm subclass

When you are subjected to an effect originating from your ally that allows you to make a saving throw to take only half damage while you are in swarm form, you instead take no damage if you succeed on the saving throw, and only half damage if you fail.

Additionally, you can communicate simple phrases and concepts while in swarm form, shaping yourself into shapes or symbols, making crudely coordinated sounds, flashing bioluminescent lights, releasing scents, or providing similar sensory information.