First printed in Mirrodin (2003)
All 2 prints
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Modern Masters 2017 (MM3) #218, 2017
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Mirrodin (MRD) #161, 2003
Damping Matrix 
Artifact
Activated abilities of artifacts and creatures can't be activated unless they're mana abilities.
MTGO price: 0.006 TIX, the cheapest non-foil print (average sell price on GoatBots, 28 Oct 2026).
In the last 30 days 0.0% of Commander decks played it (2 of 6150). Most played in Raph & Mikey, Troublemakers.
Combos
4 combos from Commander Spellbook, the most popular first.
- Destroy all creatures that enter the battlefield, Lock: Damping Matrix + Lethal Vapors + Mycosynth Lattice
- Players can't cast creature spells, Lock: Aether Storm + Damping Matrix + Encroaching Mycosynth
- Players can't cast creature spells, Lock: Aether Storm + Damping Matrix + Mycosynth Lattice
- Destroy all creatures that enter the battlefield, Lock: Damping Matrix + Encroaching Mycosynth + Lethal Vapors
Legality
Constructed
- Standard Not legal
- Pioneer Not legal
- Modern Legal
- Legacy Legal
- Vintage Legal
- Pauper Not legal
- Future Standard Not legal
- Historic Not legal
- Timeless Not legal
- Alchemy Not legal
- Penny Dreadful Legal
- Premodern Not legal
- Old School 93/94 Not legal
Singleton
- Gladiator Not legal
Commander formats
- Commander Legal
- Duel Commander Legal
- Pauper Commander Not legal
- PreDH Legal
- Tiny Leaders Legal
- Oathbreaker Legal
- Brawl Not legal
- Standard Brawl Not legal
- Competitive Brawl Not legal
