# 2021 Magic: The Gathering Mystery Booster Playtest Cards 2021 #9

> The 2021 Magic: The Gathering Mystery Booster Playtest Card Priority Avenger (CMB2 #9), a rare Bird Wizard creature featuring flying and unique casting restrictions.

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## Identity

- **Year**: 2021
- **Manufacturer brand**: Magic: The Gathering
- **Set / series**: Mystery Booster Playtest Cards 2021
- **Card number**: #9
- **Product type**: TCG_CARD

## Description

The 2021 Magic: The Gathering Mystery Booster Playtest Card Priority Avenger stands out as a distinctive artifact for TCG enthusiasts. Identified as card number 9 in the CMB2 set, this piece features the Priority Avenger character as a Creature — Bird Wizard. With a mana cost of {3}{W} and a mana value of 4, it occupies a specific niche in the white color identity. The card boasts a power of 3 and toughness of 4, enhanced by the flying ability.

What makes this card particularly intriguing for collectors is its unique rules text. Unlike standard cards, Priority Avenger prevents players from casting instant spells unless a spell or ability is already on the stack. This creates a dynamic gameplay scenario that challenges opponents to adapt their strategies. As part of the Mystery Booster Playtest Cards series, these cards were designed to test new mechanics and designs before potential future releases. Collectors often seek out playtest cards like Priority Avenger for their historical significance and the insight they provide into the development process of Magic: The Gathering. The rarity of this playtest card adds to its appeal, making it a valuable addition to any serious collection. For investors and hobbyists alike, cards from the Mystery Booster playtest era represent a fascinating chapter in the game's history, offering a glimpse into the creative experimentation that drives the TCG forward.

## FAQ

### What is the Mystery Booster Playtest Cards set?

The Mystery Booster Playtest Cards set consists of unofficial cards created to test new mechanics and designs for Magic: The Gathering. These cards, such as Priority Avenger from 2021, were not intended for official competitive play but offer collectors a unique look at the game's development process.

### What are the abilities of Priority Avenger?

Priority Avenger is a Bird Wizard creature with flying. Its unique ability prevents other players from casting instant spells unless a spell or ability is already on the stack, creating a restrictive effect on opponent interactions.

### Why are playtest cards collectible?

Playtest cards are collectible because they represent experimental designs and mechanics that never saw official release. They provide historical context for collectors interested in the evolution of Magic: The Gathering and are often sought after for their rarity and unique gameplay effects.

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Last verified: 2025-11-29.