# 2021 Magic: The Gathering Magic Online Promos #90040

> Deekah, Fractal Theorist is a 2021 Magic Online Promo foil card (#90040) featuring the legendary Human Wizard with unique Magecraft token-synthesizing abilities.

Canonical URL: https://supercatch.com/product/magic-the-gathering-magic-online-promos-deekah-fractal-theorist-90040-foil-promo

## Identity

- **Year**: 2021
- **Brand**: Magic: The Gathering
- **Set**: Magic Online Promos
- **Card Number**: 90040
- **Featured**: Deekah, Fractal Theorist
- **Game**: Magic: The Gathering
- **Rarity**: Rare
- **Mana cost**: {4}{U}
- **Type**: Legendary Creature — Human Wizard
- **Power / Toughness**: 3 / 3
- **Color**: U
- **Language**: English
- **Material**: Card Stock
- **Finish**: Foil

## Description

Deekah, Fractal Theorist arrives as card number 90040 from the 2021 Magic Online Promos set, distinguished by its Rare foil treatment. This Magic: The Gathering trading card card depicts a Legendary Human Wizard with a mana cost of {4}{U} and a power and toughness of 3/3. The artwork is by Donato Giancola, lending a distinct visual identity to this promotional release. The card’s mechanical identity centers on its Magecraft ability, which activates whenever you cast or copy an instant or sorcery spell. This effect creates a 0/0 green and blue Fractal creature token, with X +1/+1 counters placed on it based on that spell's mana value. Additionally, Deekah possesses a activated ability that costs {3}{U}, allowing a target creature token to become unblockable for the turn. This combination of token generation and combat protection defines the card's strategic profile in the Magic: The Gathering format. As a numbered promo from the Magic Online Promos series, this release holds specific appeal for TCG enthusiasts. The foil finish and the specific card number create a distinct collectible variant within the broader catalog. The interplay between the card's numerical identifier and its functional design makes it a notable entry for those interested in the 2021 promotional landscape of the game. Collectors often appreciate the precision of numbered promos like Deekah, Fractal Theorist. The combination of the {4}{U} mana cost, the 3/3 base stats, and the versatile Magecraft trigger offers a tangible piece of the 2021 Magic Online Promos era. Whether viewed through the lens of gameplay utility or catalog completeness, this card represents a specific moment in the game's promotional history.

## FAQ

### What is the mana cost and type of Deekah, Fractal Theorist?

Deekah, Fractal Theorist is a Legendary Creature — Human Wizard with a mana cost of {4}{U} and a power/toughness of 3/3. Its mana value is 5, placing it in the mid-to-high mana range for early-game deployments.

### How does the Magecraft ability work on this card?

The Magecraft ability triggers whenever you cast or copy an instant or sorcery spell. It creates a 0/0 green and blue Fractal creature token and puts X +1/+1 counters on it, where X is the mana value of the spell that triggered the ability.

### Is Deekah, Fractal Theorist part of a specific set?

Yes, this card is numbered 90040 and belongs to the Magic Online Promos set, released in 2021. It is a Rare foil promotional card, distinct from the main set checklist.

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Editorial content updated: 2026-10-04.

Site deployment: 2025-11-29.