Imp Swarm

This event can trigger when crossing the bridge across the magma river in Asmodeus, near Imp Geyser.
A loud noise can be heard from afar coming from Imp Geyser as if it just erupted. Not much time later, the players will be able to see a large black cloud approaching. As it gets closer, it becomes clear that this cloud is a swarm of imps that are rushing toward the players' location. Once the imps are upon them, the players will have to find a way to navigate past the swarm while protecting themselves from the imps that will tug on their clothes, scratch their faces, and try and steal some of their possessions.
This event is a skill challenge that ends after 5 successes. After 2 fails the players will be robbed of their items. They will lose one item or 1d20 +5 of gp for every 2 fails, starting with the 3rd fail. The DC of a check is 10 + 1d4 by default, being able to be reduced or increased by up to 3 depending on how effective or easy to execute the actions is.