Assert Authority {5}{U}{U}
Instant
Affinity for artifacts (This spell costs {1} 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.
Prints (9)
| Set | # | Rarity | Finishes | USD | Foil USD |
|---|---|---|---|---|---|
| Mirrodin (MRD) | 30 | uncommon | nonfoil, foil | — | — |
| Mirrodin (MRD) | 30 | uncommon | nonfoil, foil | — | — |
| Mirrodin (MRD) | 30 | uncommon | nonfoil, foil | — | — |
| Mirrodin (MRD) | 30 | uncommon | nonfoil, foil | — | — |
| Mirrodin (MRD) | 30 | uncommon | nonfoil, foil | — | — |
| Mirrodin (MRD) | 30 | uncommon | nonfoil, foil | — | — |
| Mirrodin (MRD) | 30 | uncommon | nonfoil, foil | — | — |
| Mirrodin (MRD) | 30 | uncommon | nonfoil, foil | — | — |
| Mirrodin (MRD) | 30 | uncommon | nonfoil, foil | $0.25 | $2.94 |