Crafting
The Astral Barrier requires:
4 Cobblestone Wall/Mossy Cobblestone Wall (the two are interchangeable)
To craft the Barrier, place the Walls in the diagonal corner panels, then place the Eyes of Ender in the center-left and center-right panels and the Vinteum Dust in the center-up and center-down panels.

Use
Uses Etherium to prevent the use of Magic in a radius around itself. The Radius is determined by the Focus placed in the middle slot, accessible via right-clicking the Barrier.
Lesser Focus | 5 Blocks |
Standard Focus | 10 Blocks |
Greater Focus | 15 Blocks |
The Barrier requires a redstone signal to function.
Additionally, if a player is carrying a Keystone with a pattern matching the one in the Barrier, they will still be able to use Magic within its radius of effect.