U#302003
MRD· MirrodinGreg Hildebrandt
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Assert Authority
Instant
for artifacts (This spell costs less to cast for each artifact you control.)
Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
Format legality
CommanderModernLegacyVintagePioneerStandard
Alternate printings · 1
Price across printings
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