# 2003 Magic: The Gathering Mirrodin #30

> This foil Assert Authority card from the 2003 Mirrodin set offers collectors a powerful blue Instant with high mana value and artifact synergy.

Canonical URL: https://supercatch.com/product/magic-the-gathering-mirrodin-assert-authority-30-foil

## Identity

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

## Description

Assert Authority is a seven-mana blue Instant from the 2003 Magic: The Gathering Mirrodin expansion, identified as card number 30 in the MRD set code. Designed by artist Greg Hildebrandt, this Uncommon rarity card features an Unfoil treatment in its base print, with specific copies available in a Foil finish that collectors often seek for their reflective quality. The card’s gameplay mechanics allow players to counter target spells, exiling them rather than returning them to the graveyard, while benefiting from an Affinity for artifacts that reduces casting costs based on controlled artifact permanents. For enthusiasts of the Magic: The Gathering trading card game, Mirrodin remains a distinct era known for its unique mechanical themes, making cards like Assert Authority valuable for completing sets or building competitive decks. The card’s identity as a blue Instant with significant mana value makes it a notable piece for those studying the strategic depth of early 2000s Magic expansions.

## FAQ

### What is the mana cost of Assert Authority?

Assert Authority has a mana cost of five generic mana and two blue mana, totaling a mana value of seven. This high cost is balanced by its ability to counter target spells and exile them from the game.

### How does Affinity for artifacts affect Assert Authority?

The Affinity for artifacts ability reduces the card's casting cost by one mana for each artifact you control. This mechanic allows players to cast the spell more efficiently if they have established an artifact-heavy board state.

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Last verified: 2025-11-29.