# 2021 Magic: The Gathering Magic Online Promos #90088

> Professor Onyx is a Mythic Rare card from the 2021 Magic Online Promos set, identified by card number 90088. This product represents a distinct piece of Magic: The Gathering history for dedicated collectors.

Canonical URL: https://supercatch.com/product/magic-the-gathering-magic-online-promos-professor-onyx-90088-mythic-rare

## Identity

- **Year**: 2021
- **Manufacturer brand**: Magic: The Gathering
- **Set / series**: Magic Online Promos
- **Card number**: #90088
- **Product type**: TCG_CARD

## Description

The Professor Onyx card, cataloged as number 90088 within the 2021 Magic Online Promos set, holds a specific place in the Magic: The Gathering trading card game landscape. As a Mythic Rare release, it carries the visual and structural weight associated with the highest tier of rarity in the game's collectible hierarchy. Collectors often seek out items from promotional sets like Magic Online Promos because they represent exclusive distribution events or digital platform milestones that are distinct from standard retail expansions. This card is designed around a singular legendary character, bringing a focused narrative element to the collection. The artwork is credited to Kieran Yanner, whose style contributes to the card's visual identity without relying on generic tropes. For investors and completists, the card number 90088 serves as a unique identifier within the broader catalog, allowing for precise tracking and organization. The Mythic Rare designation ensures that the item is treated as a premium piece within its subset, appealing to those who prioritize rarity tiers in their acquisition strategies. Understanding the mechanics of a card like Professor Onyx adds depth to its appeal beyond mere aesthetics. The design incorporates a Magecraft ability, which triggers whenever a player casts or copies an instant or sorcery spell. This creates a dynamic gameplay loop where damage and life gain are balanced outcomes, reflecting the character's thematic influence. The card also offers strategic options through its loyalty abilities, allowing players to manipulate their library by examining the top three cards and discarding the remainder, or to force opponents to sacrifice their most powerful creatures. These mechanics define the card's utility and make it a subject of interest for those analyzing game design., we provide a platform where the identity of each card is preserved and highlighted. Whether you are building a thematic collection or tracking the evolution of promotional releases, this card stands as a notable entry in the 2021 catalog. Its status as a Mythic Rare from the Magic Online Promos set makes it a valuable reference point for enthusiasts studying the breadth of the game's output during that year.

## FAQ

### What is the card number for Professor Onyx in the Magic Online Promos set?

Professor Onyx is identified by the card number 90088 within the 2021 Magic Online Promos catalog. This number allows collectors to uniquely identify this release among other promotional items.

### Is Professor Onyx considered a Mythic Rare card?

Yes, Professor Onyx is classified as a Mythic Rare in the Magic: The Gathering trading card game. This rarity tier is typically associated with powerful gameplay mechanics and exclusive distribution channels.

### Who is the artist credited for Professor Onyx?

The card Professor Onyx features artwork by Kieran Yanner. His illustrations are a key component of the card's visual identity and are recognized by collectors familiar with his work in the game.

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Last verified: 2025-11-29.