# 2023 Magic: The Gathering Phyrexia: All Will Be One #405

> The Serum Sovereign foil card (#405) from Magic: The Gathering's 2023 Phyrexia: All Will Be One expansion features a powerful Phyrexian Sphinx with dynamic oil counter abilities.

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## Identity

- **Year**: 2023
- **Manufacturer brand**: Magic: The Gathering
- **Set / series**: Phyrexia: All Will Be One
- **Card number**: #405
- **Product type**: TCG_CARD

## Description

The Serum Sovereign stands as a formidable presence in Magic: The Gathering's Phyrexia: All Will Be One expansion, released in 2023. As card number 405 in the set, this foil rare captures the essence of the Phyrexian aesthetic through its intricate design and mechanical depth. Crafted by artist Chris Rallis, the card depicts a Phyrexian Sphinx that embodies the relentless expansion of the machine plague. Collectors of Magic: The Gathering trading cards often seek out this creature for its unique gameplay mechanics and visual appeal. The Serum Sovereign is a five-mana Phyrexian Sphinx that offers significant card advantage and board control. Its ability to accumulate oil counters whenever a noncreature spell is cast allows it to grow in power and utility during a match. Players can remove these oil counters to draw cards and scry, making it a flexible asset in various deck archetypes. For enthusiasts of collectible card games, the foil treatment adds a distinct layer of value and visual interest. The shimmering finish highlights the detailed artwork and enhances the card's prestige within a collection. Whether you are building a themed library around the Phyrexia set or simply appreciate high-quality foil prints, this card represents a key piece of modern Magic history. By focusing on catalog-level details, we help collectors understand the identity and mechanics of cards like the Serum Sovereign. This card serves as a testament to the creative complexity of Magic: The Gathering, inviting players to engage with its rich lore and strategic depth.

## FAQ

### What is the mana cost and type of the Serum Sovereign card?

The Serum Sovereign is a five-mana Phyrexian Sphinx with a mana cost of {4}{U}. It has a power and toughness of 4/4 and belongs to the blue color identity.

### How does the Serum Sovereign's oil counter mechanic work?

Whenever you cast a noncreature spell, you place an oil counter on the Serum Sovereign. You can then remove an oil counter to draw a card and scry 2, providing both card draw and board filtering capabilities.

### Who is the artist for the Serum Sovereign card in Phyrexia: All Will Be One?

The Serum Sovereign was illustrated by Chris Rallis.

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Last verified: 2025-11-29.