Tier 0 Dragon Skull crashed game.

[GoldenDeer]

I never picked up a tier 0 dragon skull to my knowledge. One of my other skulls must have bugged out and randomly became one. I was confused on what the heck it was and tried placing it, now the game will only crash because it can't render in whatever the heck the tier 0 skull is. This is on a server and it crashes anyone within render distance.

[Redstone Dreamer]

Which mod was this? What are all the mods that were in use? It will help if enough information to replicate the problem is available.