![Defense Grid (Retro Schematic) [The Brothers' War Retro Artifacts]](http://cryptmtg.com/cdn/shop/products/a49a0261-6c3c-5709-81c6-1de69a18d859_2290f4b7-1bce-4119-b805-54e2c28af8dd_800x.png?v=1699028860)
![Defense Grid (Retro Schematic) [The Brothers' War Retro Artifacts]](http://cryptmtg.com/cdn/shop/products/a49a0261-6c3c-5709-81c6-1de69a18d859_2290f4b7-1bce-4119-b805-54e2c28af8dd_1024x.png?v=1699028860)
Description
| 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*
