Shilo mist

Shilo mist can be found killing the zombie variant of undead ones on Karamja. All players within a square of the mist will receive 2-3 damage per hit. To avoid this, players need to be at least two squares away from where the mist spawns.

As the mist does not inflict recurring poison, anti-poison potions are not required.

Historical

Shilo mist was also part of a former random event that occurred while Thieving from chests. Occasionally the chest would become stuck and mist would come out and damage nearby players. Despite the fact it had a green hitsplat, however, the mist did not inflict recurring poison.

• 
  A poison gas cloud.
• 
  The animation which appears several times when spawned.