User blog comment:Lord Loss/Monster Appreciation Day: Barioth/@comment-76.18.151.122-20120928025326/@comment-4212769-20120928092022

Barioth spikes can be often obtained by shinies (Tri pit fall trap (IIRC), P3rd break both wings, when it attacks with a certain air attack with that it completely slides over) or by tail carves. The best would be if you break everything, cut the tail and carve it, try to get the shiny and capture it. That would have the highest probability to get one.