The Jump Bomb is a new item in Kid Icarus: Uprising, appearing only in Together Mode. When deployed, fighters that walk into it will be sent into the sky in an explosion, damaging them. If the fighter that deployed it jumps onto it, they will not take damage. Jump Bombs appear randomly or are found in Treasure Boxes.
"This sping-shaped bomb knocks enemies straight into the sky. You can also use it to jump by throwing it at your feet, making it the rare item that can be used to enhance both attacks and movement."