The Aries Tree

A giant humanoid tree that moves around, spreading spores that make people fight each other.

The spores can reach 10 meters, though the wind can spread them further to biological creatures.

Damaging the Heart of the Forest makes it more active. If destroyed, it'll start to migrate to fertile land. And that might be where a human kingdom is.

You must destroy the Aries tree and the Corrupt Seed it carries to prevent this.