Defense Grid
Artifact
BRRThe Brothers' War Retro Artifacts#76rare
"Properly installed, each powerstone emits a targeted electromagnetic field that halts momentum as sure as stone." —*Tome of Obstructions*
- Finishes
- Nonfoil · Foil
- Border
- black
- Frame
- 1997
- Pull rate
- ~1 in 75–2990
- Illustrator
- Mark Tedin
- Found in
- The Brothers' War Collector Booster Pack · The Brothers' War Set Booster Pack · The Brothers' War Draft Booster Pack
CommanderLegalModernLegalStandardNot legal
Format legality
Constructed
StandardNot legal
PioneerNot legal
ModernLegal
LegacyLegal
VintageLegal
PauperNot legal
Commander
CommanderLegal
Pauper CommanderNot legal
Duel CommanderLegal
PreDHLegal
OathbreakerLegal
Tiny LeadersLegal
Arena
AlchemyNot legal
HistoricLegal
TimelessLegal
BrawlLegal
Standard BrawlNot legal
Competitive BrawlLegal
GladiatorLegal
Other
PremodernLegal
Old SchoolNot legal
Penny DreadfulLegal
Future StandardNot legal
Each spell costs 
more to cast except during its controller's turn.
more to cast except during its controller's turn.Market · per finishspark updated 56m ago · prices as of 2026-08-30
TCGplayerFinish
Market
Δ 30D · Trend
Low
Buylist
Buy / Sell Gap
Buy
Nonfoil
$8.70
+20.0%
Since Feb 2024:H $8.70L $2.71$5.09
$4.70
$0.39+8% · normal spread
VenuesHide venues
Low: tcgplayer
Buylist: cardkingdom
Foil
$13.76
+3.0%
Since Feb 2024:H $14.14L $4.42$9.97
$6.50
$3.47+35% · normal spread
VenuesHide venues
Low: tcgplayer
Buylist: cardkingdom
Rulings
2 · latest May 1, 2006
- WotCMay 1, 2006
In Two-Headed Giant, spells don't cost extra on your own turn.
- WotCOct 4, 2004
The additional cost can be reduced by effects that reduce costs, such as Sapphire Medallion.