Archlight Shimmerbugs
“When he reached the base, hundreds of shimmerbugs awaited him. Glowing in every colour you could imagine as they danced around him, the light hum being emitted from their translucent wings sounding like music to the ears of those who beheld them. Young Hadik was awestruck, swaying to the sounds of the forest as he danced among them, unaware that he was moving further and further from his home.”
When the Lights Went Out
Medium Swarm of Tiny Beasts, Chaotic-Evil
Armour Class: 12 (natural armour)
Hit Points: 24 (6d8)
Speed: 20 ft. Flying
Skills: Perception (+3), Persuasion (+4)
Damage Resistances: Bludgeoning, Piercing, Slashing.
Condition Immunities: Charmed, Frightened, Grappled, Paralysed, Restrained.
Senses: Passive Perception 11.
Languages: None.
Challenge Rating: 1/2 (100 XP)
Swarm. The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny insect. The swarm can't regain hit points or gain temporary hit points.
Actions
Hypnotise. The swarm can become a alluring multicoloured mass, forcing any creature looking at it to make a Wisdom Save (DC 12) or become drawn to it, unable to resist moving towards the lights for 1d4 minutes. This saving throw can be made at the end of each 1d4 minutes as rolled for the initial duration. Creatures immune to being Charmed are exempt from this.
Disorient. The swarm changes to a bright and dizzying red, beating their wings to create a loud white noise. This can only be done to a creature occupying the same space as the swarm. That creature must then make a Wisdom Save (DC 12) or get disadvantage on all attack rolls and ability checks until the swarm is silenced.