In-game description:
Dark Magic Barrier
Rarity: 101
"This demonic energy field only lets the right people through."
This item can't be spliced.
This item never drops any seeds.
This Item has special properties you can adjust with the Wrench.
Additional Info:
You can get this when you drop Forcefield in Growganoth during Halloween.
The Demonic Energy Field works like the House Entrance.