Grenade of Ultimate Destruction

Overview
The Grenade of Ultimate Destruction (GUD) is an item thought of by Egram and Inizziv. So far the only instance of the item was created by Egram with assistance from Inizziv and Edgar Green. It was used to get rid of a dragon that was inside Skyreach Castle during The Taking of Skyreach Castle. Notably it did not kill this dragon and only transported it to the Astral Plane.

Creation & Use
The GUD is created by putting a bag of holding, and a portable hole in a custom carrying case. The idea is that if it hits a surface hard the portable hole will fall into the bag of holding causing a portal to the Astral Plane. to open and immediately suck everything within 10 feet of it inside. This is the image that inspired the creation, as well as a rough aproximation of what the blueprints look like, minus the arrow shaft on the DDaC version