A powerful Earth Gear that shoots giant spears made out of diamonds from the ground, which fly through the air and home in on their target to skewer them. Since they are made of diamond and track their victim, they are very hard to deflect or counter.
Stoners striking this gear multiple times over the centuries to make quick cash has greatly reduced the value of diamonds in Battal, and they are one of the least valuable gemstones on the planet - often just found sitting on the side of the road.