Damping Matrix Tweet NM-Mint, English, limit 14 $0.54 / $0.70 credit Buy This Product Details Color: Artifact Card Text: Activated abilities of artifacts and creatures can't be played unless they're mana abilities. Rarity: R Cost: 3 Card Type: Artifact Artist: Mike Dringenberg Name: Damping Matrix Finish: Regular Card Number: 161/306 Set Name: Mirrodin