A boomerang-like weapon made of Deepstone, the only solid substance that can affect a ghost. The ninja first discover Aeroblades in Ronin’s pawnshop, and later use them as weapons against Morro and his ghostly forces. Ronin keeps a cache of Aeroblades onboard his aircraft R.E.X.

Ninja Dojo
Elemental Blade
4.5 Bricks
Inventing Gadgets