Swarm

The swarm is a RuneScape random event. It attacks a player, and the player cannot attack it back. It hits for either one or two points of damage. All the player needs to do is walk or run away for a short distance, and then the swarm will stop attacking. If they don't, they will eventually be killed by the swarm.

History
This random event was in fact attackable with its release, the only problem was that it had an incredibly high Defence and only a few 1s and 2s were able to pierce through. It also had an amazing amount of Hitpoints and healed faster than normal. All active players attacked by the swarm should walk away, probably with a mild sense of annoyance. If you don't, it will eventually kill you.