![Defense Grid (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts]](http://mediareload.net/cdn/shop/products/15ed69ed90cc124c3dfdf55e7c6f357b_1024x1024.jpg?v=1709426072)
![Defense Grid (Retro Schematic) (Serialized) [The Brothers' War Retro Artifacts]](http://mediareload.net/cdn/shop/products/15ed69ed90cc124c3dfdf55e7c6f357b_480x480.jpg?v=1709426072)
| Set: | The Brothers' War Retro Artifacts |
| Type: | Artifact |
| Rarity: | Rare |
| Cost: | {2} |
Each spell costs {3} more to cast except during its controller's turn.
"Properly installed, each powerstone emits a targeted electromagnetic field that halts momentum as sure as stone."
—*Tome of Obstructions*