# 2022 Magic: The Gathering The Brothers' War #309

> Secure the Autonomous Assembler foil card (#309) from Magic: The Gathering's 2022 The Brothers' War expansion, featuring Slawomir Maniak's illustration.

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## Identity

- **Year**: 2022
- **Manufacturer brand**: Magic: The Gathering
- **Set / series**: The Brothers' War
- **Card number**: #309
- **Product type**: TCG_CARD

## Description

The Autonomous Assembler, designated as card number 309 in the 2022 Magic: The Gathering set The Brothers' War, offers a unique mechanical twist for collectors and players alike. Illustrated by Slawomir Maniak, this foil artifact creature brings the Assembly-Worker subtype to life with a distinct prototype mechanic that allows casters to choose between a standard mana cost or a reduced alternative. This flexibility makes it a compelling addition to any deck-building strategy focused on artifact synergies.

The Brothers' War expansion captured the epic conflict of the Brothers' War era, and cards like Autonomous Assembler highlight the intricate design philosophy of that release. The foil treatment adds significant visual appeal, catching the light and enhancing the card's presence in a collection. For enthusiasts of Magic: The Gathering, this card represents both a functional gameplay tool and a desirable collectible item. Its status as a rare parallel within the set underscores its value to those looking to complete specific subsets or build high-quality collections. Whether used in gameplay or displayed as part of a broader Magic: The Gathering archive, Autonomous Assembler stands out for its clever design and artistic execution.

## FAQ

### What is the prototype mechanic on Autonomous Assembler?

The prototype mechanic allows you to cast the spell with a different mana cost, color, and size than its printed values. When cast this way, the card retains its original abilities and creature types while adapting to the new parameters.

### Who illustrated the Autonomous Assembler foil card?

Slawomir Maniak is the artist credited with illustrating this card in The Brothers' War set.

### Is Autonomous Assembler an artifact creature?

Yes, Autonomous Assembler is classified as an Artifact Creature — Assembly-Worker. It has a mana value of 5 and possesses abilities such as Vigilance and a activated ability to place +1/+1 counters on other Assembly-Workers.

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Last verified: 2025-11-29.