Carnivorous Swarm
From AmtWiki
A Terrain Type as described in the Dor Un Avathar X
Something small and annoying is eating your flesh if you enter this area, which should be marked with a red ribbon. Take a wound to any location (player’s choice) after 5 seconds and a Wounds Kill wound after 10 seconds. Wounds Kill wounds continue at the rate of one per second after the initial 10 seconds. Ignores armor.
See also