Super Boomerang

Double Cutter is a combination ability used in Kirby 64: The Crystal Shards made by a combination of two Cutter enemies. Kirby is able to split himself, then throw his body in the shape of a boomerang with spikes on the border. This move can attack through walls and churns up dirt when it flies close to the ground.

While split in two, Kirby has no face or arms and can only run and jump, he can't float and is left very vulnerable to enemy attack. This ability is very similar to Rick's Cutter ability from Kirby's Dream Land 3 where he throws Kirby like a boomerang.