The Ice Cascade Bomb is a synthesized item in Atelier Meruru: The Apprentice of Arland. This is a unique story related item. This is required to fight Airshatter if he is awakened by finishing all of the development quests at Yuvel. There are several events and steps required to make the Ice Cascade Bomb. It can be created after first making the Rime Crystal. The Ice Cascade Bomb can be brought to Mt. Velus and is used to cool down the area, putting Airshatter in a weakened state.