Defense Grid (The Brothers' War Retro Artifacts #76)

Defense Grid {2}

Artifact

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

Illustrated by Mark Tedin

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny
Notes and Rules Information for Defense Grid:
  • The additional cost can be reduced by effects that reduce costs, such as Sapphire Medallion. (2004-10-04)
  • In Two-Headed Giant, spells don't cost extra on your own turn. (2006-05-01)