Wondrous item, rare (requires attunement)
This bag appears to be made from rat fur and is uncomfortably itchy to the touch. Once per day, you can reach into the bag and cause a swarm of rats to emerge in a space within 10 feet of you. As a bonus action, you can direct the swarm to use its movement, but you cannot control its action; the swarm attacks anything that is in its space, including you. After 1 minute, the swarm returns to the bag, and can’t be summoned again until the next stroke of midnight.
If the swarm is defeated or otherwise lost, the bag does not function again until you fill it with cheese worth 1 gp.
5th Edition Horror. © 2018, Fat Goblin Games; Author: Ismael Alvarez