# 2021 Magic: The Gathering Mystery Booster Playtest Cards 2021 #73

> Experiment Five, card number 73 from the 2021 Mystery Booster Playtest Cards set. This rare Magic: The Gathering creature offers a distinct gameplay twist for dedicated collectors.

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## Identity

- **Year**: 2021
- **Brand**: Magic: The Gathering
- **Set**: Mystery Booster Playtest Cards 2021
- **Card Number**: 73
- **Featured**: Experiment Five
- **Game**: Magic: The Gathering
- **Rarity**: Rare
- **Mana cost**: {G}
- **Type**: Creature — Bear Snake Mutant
- **Power / Toughness**: 1 / 1
- **Color**: G
- **Language**: English
- **Material**: Card Stock
- **Finish**: Normal

## Description

Experiment Five, designated as card number 73 in the 2021 Mystery Booster Playtest Cards series, stands as a unique entry for Magic: The Gathering enthusiasts. This rare creature card introduces a specialized gameplay mechanic that diverges from standard mana costs, requiring players to utilize mana from sources capable of producing two or more colors. This distinctive feature makes it a fascinating subject for collectors interested in experimental design and complex rules interactions within the game's history. As part of the Mystery Booster Playtest Cards, this release was designed to test new mechanics and card structures before potential inclusion in future expansions. The card's identity as a Bear, Snake, and Mutant creature adds thematic depth to its one-mana cost, offering a low-cost entry point for strategic play while maintaining the intrigue of a playtest artifact. The rarity of Experiment Five within the playtest set enhances its appeal among those who value the historical context of Magic: The Gathering development. Its unique ability to gain power and toughness through multicolored mana provides a tangible connection to the iterative process behind the game's most beloved mechanics. For investors and hobbyists alike, owning a piece of this experimental era offers a deeper appreciation for the creative risks taken to shape the trading card landscape. Whether you are completing a set of playtest cards or focusing on rare creature cards, this card represents a significant moment in the game's ongoing narrative.

## FAQ

### What is Experiment Five in Magic: The Gathering?

Experiment Five is a rare creature card from the 2021 Mystery Booster Playtest Cards set. It is a Bear, Snake, and Mutant with a unique ability that allows you to put counters on it by paying mana from sources that can produce multiple colors.

### What card number is Experiment Five in the Mystery Booster Playtest Cards?

Experiment Five is listed as card number 73 within the Mystery Booster Playtest Cards set. This numbering helps collectors identify and organize their collections from this experimental release.

### Why is Experiment Five significant to collectors?

This card is significant because it represents an experimental design test from the 2021 Mystery Booster Playtest Cards. Its unique mana mechanic and rare status make it a valuable piece for those interested in the development history of Magic: The Gathering.

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Editorial content updated: 2026-09-28.

Site deployment: 2025-11-29.