Darksteel Citadel
Artifact Land
Indestructible
: Add 
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Structures built from darksteel yield to neither assault nor age.
John Avon
Rulings
Although Darksteel Citadel is an artifact, it can't be cast as a spell. Playing it follows the normal rules for playing a land.
(wotc • 2014-07-18)
Rulings
Although Darksteel Citadel is an artifact, it can't be cast as a spell. Playing it follows the normal rules for playing a land.
(wotc • 2014-07-18)