# 2021 Magic: The Gathering Magic Online Promos #90050

> The 2021 Magic Online Promos release featuring Theoretical Duplication, card #90050. This rare instant by artist Anna Christenson offers a unique token-generating effect for your collection.

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## Identity

- **Year**: 2021
- **Manufacturer brand**: Magic: The Gathering
- **Set / series**: Magic Online Promos
- **Card number**: #90050
- **Product type**: TCG_CARD

## Description

Theoretical Duplication stands out in the 2021 Magic Online Promos set as a potent blue instant with a distinct token-generating ability. Identified by the set code PRM and card number 90050, this rare card is designed for collectors who appreciate the strategic depth of Magic: The Gathering. The card costs three mana to cast, combining two generic mana and one blue mana, making it a versatile inclusion for blue-based decks.

The gameplay effect is straightforward yet powerful: whenever a non-token creature controlled by an opponent enters the battlefield, you create a token copy of that creature. This mechanic allows players to gain control of opposing threats, shifting the board state in their favor. Collectors often seek this card for its unique interaction and the prestige of the Magic Online Promos series, which features exclusive designs not found in standard sets.

For those building a comprehensive collection of Magic: The Gathering cards, Theoretical Duplication offers a blend of aesthetic appeal and mechanical intrigue. The card’s rarity and specific promotional status make it a desirable addition for enthusiasts who value both the art and the gameplay of the trading card game. Whether you are a seasoned collector or new to the hobby, this card represents a significant piece of modern Magic history. Its ability to counter opponent strategies while expanding your own board presence makes it a standout in the 2021 promotional lineup. As you expand your catalog, consider how this card fits into your broader collection of promotional and rare cards from the Magic: The Gathering universe.

## FAQ

### What is the mana cost of Theoretical Duplication?

Theoretical Duplication has a mana cost of {2}{U}, requiring two generic mana and one blue mana to cast.

### Who illustrated Theoretical Duplication?

The card was illustrated by Anna Christenson, known for her work in the Magic: The Gathering trading card game.

### What set is Theoretical Duplication from?

It is part of the 2021 Magic Online Promos set, identified by the set code PRM and card number 90050.

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Last verified: 2025-11-29.