A Wave Incense is a held item that raises the power of the holder's Water-type moves by 20%. If a Mantine holds a Wave Incense while it breeds, it will produce a Mantyke Egg. It can be crafted in the Infuser or obtained as a tier 2 special drop. It is also a drop from wild Seaking and Floatzel.
Before Reforged, this item had the following recipe. It was removed due to many held items being far too easy to make.