First printed in Urza's Legacy (1999)
All 10 prints
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The Brothers' War Retro Artifacts (BRR) #13, 2022
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The Brothers' War Retro Artifacts (BRR) #76, 2022
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The Brothers' War Retro Artifacts (BRR) #76z, 2022
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Kaladesh Inventions (MPS) #34, 2016
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Ninth Edition (9ED) #293, 2005
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Ninth Edition (9ED) #293★, 2005
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Eighth Edition (8ED) #296, 2003
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Eighth Edition (8ED) #296★, 2003
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World Championship Decks 2000 (WC00) #nl125sb, 2000
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Urza's Legacy (ULG) #125, 1999
Defense Grid 
Artifact
Each spell costs more to cast except during its controller's turn.
In the last 30 days 2.9% of Legacy decks played it (3 of 104). Most played in Mystic Forge. In the last 30 days 36.8% of Vintage decks played it (7 of 19). Most played in Tinker Vault.
Staple
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Legacy staples:
sideboard, 3% of decks (#65)
Colorless, Artifacts -
Vintage staples:
sideboard, 37% of decks (#5)
Colorless, Artifacts -
Premodern staples:
sideboard, 12% of decks (#13)
Colorless, Artifacts
Last 120 days of MTGO results.
Legality
Constructed
- Standard Not legal
- Pioneer Not legal
- Modern Legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Not legal
- Historic Legal
- Timeless Legal
- Alchemy Not legal
- Penny Dreadful Legal
- Premodern Legal
- Old School 93/94 Not legal
Singleton
- Gladiator Legal
Commander formats
- Commander Legal
- Duel Commander Legal
- Pauper Commander Not legal
- PreDH Legal
- Tiny Leaders Legal
- Oathbreaker Legal
- Brawl Legal
- Standard Brawl Not legal
- Competitive Brawl Legal