I don't usually scare in Minecraft or FTB. First time playing on the newly released Horizons pack, I had a little bunker and underground farm right next to a tainted biome. Tainticles, tainted chickens and pigs, taint swarms - no problem. It's not until I'm harvesting some of my crops - mostly Pam's, but one of them was Witchery - a ginger root I think, and after I harvested it, this little plant-demon thing popped up and started running around, scared the crap out of me. Pretty sure I annihilated half of my farm just trying to subdue the darn thing. I got my ginger harvested, put it in a special chest, and never touched another witchery crop ever again.