Bioindicator: A successful Science (biology) 8+ or Survival 8+ check after 10 minutes of observation reveals one useful environmental fact: approaching rain, airborne chemical contamination, a nearby flowering stand, or a predator disturbing the grove.
Holst Use: These are perfect for a childhood flashback or “quiet science” scene. Studying a swarm carefully for an hour grants DM+1 to the next Science (biology) check involving Alellian insect, pollen, or forest ecology.
Prismatic Dazzle: At dawn, dusk, or under directed light, a swarm becomes a flickering amber lens. Anyone trying to spot something through the swarm suffers DM−1 to visual Recon. This can hide a predator, a tripwire, or a child-sized figure.
Wing-Dust Cloud: Travellers moving through a dense swarm without goggles, mask, or filter plugs must make END 6+. On failure, they suffer watering eyes and coughing: DM−1 to Recon, Gun Combat, and other sight-based checks for 1D rounds.