Originally posted by Damnion:

Originally posted by Trakehner:

After you defeat Yagulth... Yes, fulings will spawn and roam the Meadows, Mountains, and Black Forests.

Are you sure it's Yaguth, I got a horde attack event at my base in the plains and I've only recently beat Moder?

Honestly can't recall. Been awhile since I went through the bosses. But regardless, he'll get those attacks in those biomes.