DooDa

"???" Elements: Shadow, Crystal, Poison, Spectral

This monster can be bred with two Double Elements.

Boodoo + Googlug

Shadowmorph + Fung Pray

Kazilleon + Flutehog

However, it can be bred with a Single Element and a Triple Element.

Jirobeat + Grumpyre

Didgetiki + Jeeode

Stong + Humbug

Triochoir + Spectgon