Assert Authority
| Name | Assert Authority |
|---|---|
| Type | Instant |
| Description | Affinity 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. |
| Artist | Greg Hildebrandt |
| Set | Mirrodin #30 |
| Wallpaper |  Download wallpaper |
| Image |  Download image |
About Assert Authority
Assert Authority, Instant, designed by Greg Hildebrandt first released in October 2003 in the set Mirrodin. It's currently being selled by the minimum price of 3.76.
Assert Authority would be a valuable addition to artifact-heavy control decks in Magic: the Gathering, as it offers a powerful spell counter ability at a potentially reduced cost due to its affinity for artifacts. While it may not be the most efficient counterspell available, its potential cost reduction and the additional benefit of exiling the countered spell make it a strong contender for inclusion in decks that can take advantage of its unique abilities. However, more versatile and widely-used counterspells like Counterspell or Mana Drain may still be preferred in most competitive decks due to their lower mana cost and broader applications.
Where to buy
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 | Ebay.com | Visit store | ||
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 | Printing proxies | $ 0.75 | Visit store |
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Price trend history
Price history
| Date | Minimum price | Median price | Decks |
|---|---|---|---|
| 2024-09-06 | 2.54 SEK | 3.12 SEK | 2 |
| 2024-09-09 | 2.54 SEK | 3.11 SEK | 2 |
| 2024-09-16 | 2.54 SEK | 2.81 SEK | 0 |
| 2024-09-23 | 2.54 SEK | 3.08 SEK | 0 |
| 2024-09-30 | 2.54 SEK | 3.06 SEK | 0 |
| 2024-10-07 | 2.54 SEK | 3.08 SEK | 0 |
| 2024-10-14 | 2.54 SEK | 3.11 SEK | 0 |
| 2024-10-21 | 2.54 SEK | 3.14 SEK | 0 |
| 2024-10-28 | 2.54 SEK | 3.15 SEK | 0 |
| 2024-11-06 | 2.54 SEK | 3.16 SEK | 0 |
| 2024-11-11 | 2.54 SEK | 3.17 SEK | 1 |
| 2024-11-18 | 2.54 SEK | 3.17 SEK | 0 |
| 2024-11-25 | 2.54 SEK | 3.18 SEK | 0 |
| 2024-12-02 | 2.54 SEK | 3.25 SEK | 0 |
| 2024-12-09 | 2.54 SEK | 3.25 SEK | 0 |
| 2024-12-19 | 2.54 SEK | 3.25 SEK | 0 |
| 2024-12-23 | 2.54 SEK | 3.25 SEK | 0 |
| 2024-12-30 | 2.54 SEK | 3.25 SEK | 0 |
| 2025-01-01 | 2.54 SEK | 3.25 SEK | 0 |
| 2025-01-06 | 2.54 SEK | 3.25 SEK | 0 |
| 2025-01-13 | 2.54 SEK | 3.25 SEK | 0 |
| 2025-01-20 | 2.54 SEK | 3.25 SEK | 0 |
| 2025-01-27 | 2.54 SEK | 3.25 SEK | 3 |
| 2025-02-03 | 2.54 SEK | 3.25 SEK | 0 |
| 2025-02-10 | 2.54 SEK | 3.25 SEK | 0 |
| 2025-02-18 | 4.87 SEK | 4.87 SEK | 0 |
| 2025-04-27 | 5.24 SEK | 5.24 SEK | 0 |
| 2025-04-28 | 4.84 SEK | 4.84 SEK | 0 |
| 2025-05-06 | 4.14 SEK | 4.14 SEK | 0 |
| 2025-05-12 | 4.13 SEK | 4.13 SEK | 0 |
| 2025-05-19 | 3.70 SEK | 3.70 SEK | 0 |
| 2025-05-28 | 3.71 SEK | 3.71 SEK | 0 |
| 2025-06-03 | 3.71 SEK | 3.71 SEK | 1 |
| 2025-06-10 | 3.65 SEK | 3.65 SEK | 0 |
| 2025-06-17 | 3.60 SEK | 3.60 SEK | 1 |
| 2025-06-23 | 3.60 SEK | 3.60 SEK | 0 |
| 2025-07-01 | 3.59 SEK | 3.59 SEK | 0 |
| 2025-07-08 | 3.58 SEK | 3.58 SEK | 0 |
| 2025-07-15 | 3.65 SEK | 3.65 SEK | 1 |
| 2025-07-22 | 3.65 SEK | 3.65 SEK | 0 |
| 2025-07-29 | 10.74 SEK | 3.62 SEK | 17 |
| 2025-08-05 | 3.63 SEK | 3.63 SEK | 0 |
| 2025-08-12 | 3.55 SEK | 3.55 SEK | 0 |
| 2025-08-18 | 3.82 SEK | 3.82 SEK | 0 |
| 2025-08-25 | 4.36 SEK | 4.36 SEK | 0 |
| 2025-09-02 | 4.98 SEK | 4.98 SEK | 0 |
| 2025-09-09 | 5.21 SEK | 5.21 SEK | 0 |
| 2025-09-15 | 5.88 SEK | 5.88 SEK | 0 |
| 2025-09-23 | 4.89 SEK | 4.89 SEK | 0 |
| 2025-09-29 | 4.75 SEK | 4.75 SEK | 0 |
| 2025-10-06 | 3.90 SEK | 3.90 SEK | 0 |
| 2025-10-13 | 3.99 SEK | 3.99 SEK | 0 |
| 2025-10-20 | 3.94 SEK | 3.94 SEK | 0 |
| 2025-10-27 | 4.42 SEK | 4.42 SEK | 0 |
| 2025-11-03 | 4.91 SEK | 4.91 SEK | 0 |
| 2025-11-10 | 4.86 SEK | 4.86 SEK | 0 |
| 2025-11-18 | 5.86 SEK | 5.86 SEK | 0 |
| 2025-11-24 | 5.94 SEK | 5.94 SEK | 0 |
| 2025-12-03 | 5.88 SEK | 5.88 SEK | 0 |
| 2025-12-08 | 4.98 SEK | 4.98 SEK | 0 |
| 2025-12-15 | 4.42 SEK | 4.42 SEK | 0 |
| 2025-12-22 | 4.03 SEK | 4.03 SEK | 0 |
| 2025-12-29 | 5.09 SEK | 5.09 SEK | 0 |
| 2026-01-01 | 5.01 SEK | 5.01 SEK | 0 |
| 2026-01-05 | 22.53 SEK | 4.96 SEK | 0 |
| 2026-01-13 | 40.09 SEK | 4.95 SEK | 0 |
| 2026-01-20 | 15.92 SEK | 7.13 SEK | 0 |
| 2026-01-26 | 8.59 SEK | 8.59 SEK | 0 |
| 2026-02-02 | 9.72 SEK | 9.72 SEK | 0 |
| 2026-02-09 | 9.65 SEK | 9.65 SEK | 0 |
| 2026-02-16 | 9.65 SEK | 9.65 SEK | 0 |
| 2026-02-23 | 8.28 SEK | 8.28 SEK | 0 |
| 2026-03-02 | 6.95 SEK | 6.95 SEK | 0 |
| 2026-03-10 | 6.47 SEK | 6.47 SEK | 0 |
| 2026-03-16 | 5.81 SEK | 5.81 SEK | 0 |
| 2026-04-02 | 5.72 SEK | 5.72 SEK | 0 |
| 2026-04-07 | 5.64 SEK | 5.64 SEK | 0 |
| 2026-04-14 | 4.81 SEK | 4.81 SEK | 0 |
| 2026-04-23 | 5.48 SEK | 5.48 SEK | 0 |
| 2026-04-30 | 5.50 SEK | 5.50 SEK | 0 |
| 2026-05-05 | 23.51 SEK | 5.44 SEK | 0 |
| 2026-05-14 | 41.08 SEK | 5.42 SEK | 0 |
| 2026-05-20 | 13.70 SEK | 4.79 SEK | 0 |
| 2026-05-25 | 4.39 SEK | 4.39 SEK | 0 |
| 2026-06-01 | 3.68 SEK | 3.68 SEK | 0 |
| 2026-06-08 | 3.54 SEK | 3.54 SEK | 0 |
| 2026-06-15 | 3.59 SEK | 3.59 SEK | 0 |
| 2026-06-23 | 3.77 SEK | 3.77 SEK | 0 |
| 2026-06-29 | 3.78 SEK | 3.78 SEK | 0 |
| 2026-07-06 | 3.59 SEK | 3.59 SEK | 0 |
| 2026-07-13 | 3.34 SEK | 3.34 SEK | 0 |
| 2026-07-20 | 3.34 SEK | 3.34 SEK | 0 |
| 2026-07-27 | 3.34 SEK | 3.34 SEK | 0 |
| 2026-08-03 | 3.34 SEK | 3.34 SEK | 0 |
| 2026-08-10 | 3.36 SEK | 3.36 SEK | 0 |
| 2026-08-17 | 3.41 SEK | 3.41 SEK | 0 |
| 2026-08-24 | 3.42 SEK | 3.42 SEK | 0 |
| 2026-09-01 | 3.76 SEK | 3.76 SEK | 0 |
Frequently asked questions about Assert Authority
What type of card is Assert Authority?
Assert Authority is a Instant card in Magic: the Gathering MTG.
What is the effect of Assert Authority?
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.
What is the price of Assert Authority?
Assert Authority currently starts at 3.76. See live prices from multiple sellers in the Where to buy section above.
What is the original set of Assert Authority?
Assert Authority was first released in the set Mirrodin, illustrated by Greg Hildebrandt.
What is the legality of Assert Authority?
Legality depends on the tournament format -- Assert Authority can be legal in some formats and banned or restricted in others. See the full breakdown per format in the Legality section above.
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