Abyss Truffle

The Abyss Truffle is a hallucinogenic mushroom that acts as a vessel for the Forest Zone's Code Crown.

Digimon Xros Wars (manga)
The Abyss Truffle is a vessel that protects the Forest Zone's Code Crown, and is protected by the Mushroomon within their village. After steals it from them, he digifuses with it and his  soldiers to form.