# 2003 Magic: The Gathering Mirrodin #30

> Assert Authority is an Uncommon Instant card from the 2003 Mirrodin expansion, featuring the affinity mechanic and art by Greg Hildebrandt.

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## Identity

- **Year**: 2003
- **Manufacturer brand**: Magic: The Gathering
- **Set / series**: Mirrodin
- **Card number**: #30
- **Product type**: TCG_CARD

## Description

Assert Authority, numbered 30 in the Mirrodin expansion, is a striking Uncommon card from the 2003 Magic: The Gathering set. Designed by Greg Hildebrandt, this card serves as a powerful tool for artifact-heavy strategies. As an Instant with a mana value of 7, its casting cost is significantly reduced by the affinity for artifacts mechanic, allowing players to pay just one less mana for each artifact in play.

The card’s effect is straightforward yet impactful: it counters target spell and exiles it, preventing it from returning to the graveyard. This makes Assert Authority a valuable inclusion in decks focused on artifact synergies. Collectors appreciate the card for its role in the Mirrodin era, a pivotal time for Magic design that introduced unique mechanics and themes. The card’s blue color identity and instant speed make it a versatile choice for controlling the board.

For those building their Mirrodin collection, Assert Authority represents a key piece of the set’s strategic depth. Its presence in the catalog highlights the diversity of cards available for traders and investors. Whether you are a seasoned player or a new collector, this card offers a glimpse into the intricate design of early 2000s Magic. The Mirrodin set remains a favorite among enthusiasts, and Assert Authority is a standout Uncommon that captures the essence of its era.

## FAQ

### What is the affinity mechanic for artifacts on Assert Authority?

Affinity for artifacts reduces the card's casting cost by {1} for each artifact you control. This allows players to cast the card for significantly less mana if they have multiple artifacts in play.

### How does Assert Authority counter spells in Magic: The Gathering?

Assert Authority counters target spell and exiles it instead of putting it into the owner's graveyard. This prevents the countered spell from being reused or replayed from the graveyard.

### Why is Assert Authority a popular card among Magic collectors?

Assert Authority is an Uncommon card from the 2003 Mirrodin set, featuring art by Greg Hildebrandt. Its unique mechanics and role in artifact strategies make it a sought-after card for collectors and players alike.

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Last verified: 2025-11-29.