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Autonomous Assembler

~$0.17 low · ~$0.36 high

Colorless. Artifact Creature — Assembly-Worker

five generic mana

034 · BRO · R · ENWhat the codes mean

Autonomous Assembler

The Brothers' War #34 · Illustrated by Slawomir Maniak

What is Autonomous Assembler worth?

Cheapest copy

~$0.17

Extended Art non-foil · The Brothers' War #309

Buy on TCGplayer

Highest TCGplayer price

~$0.36

Promo foil · The Brothers' War Promos #34s

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7 prices from $0.17 to $0.36. Every price is in the printings table below.

TCGplayer market prices in USD, updated October 14, 2026. Each price is for one printing and one finish.

Oracle text

Prototype one generic manaone white mana — 2/2 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

Vigilance

one generic mana, tap this permanent: Put a +1/+1 counter on target Assembly-Worker you control.

4/5

All 4 printings of Autonomous Assembler

PrintingRarityNon-foilFoilCardmarket (EUR)My collection
The Brothers' War #309
The Brothers' War
bro #309· 2022Extended Artrare· Cardmarket €0.27 · €0.15 foil
rare$0.17$0.31€0.27€0.15 foil
The Brothers' War Promos #34p
The Brothers' War Promos
pbro #34p· 2022Promorare· Cardmarket €0.15 · €0.47 foil
rare$0.24$0.28€0.15€0.47 foil
The Brothers' War Promos #34s
The Brothers' War Promos
pbro #34s· 2022Promorare· Cardmarket €0.35 foil
rareNo non-foil printing$0.36€0.35 foil

Prices are TCGplayer market prices in USD for each printing and finish, via Scryfall. They are a guide, not an appraisal.

Where to buy Autonomous Assembler

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Card details

First printed
2022
Printings
4
Mana value
5
EDHREC rank
#25,157 on EDHREC (Commander popularity)
Keywords
Vigilance, Prototype
Artist
Slawomir Maniak

What the codes mean

The small print at the bottom of the The Brothers' War card (#34).

034 · BRO · R · EN

  • 034Collector number: this card's place in the set list. Main-set cards print it over the set's card count.
  • BROSet code for The Brothers' War
  • RRare
  • ENPrinted in English

How to read a Magic card: every part and code, on real cards.

Rulings (7)

  1. 2022-10-14

    Casting a prototyped spell isn't the same as casting it for an alternative cost, and an alternative cost may be applied to a spell cast this way. For example, if an effect allows you to cast an artifact card without paying its mana cost, you could either cast Blitz Automaton normally, or as a prototyped spell.

  2. 2022-10-14

    If an effect copies a prototyped spell, that copy (as well as the token it becomes on the battlefield) will have the same characteristics as the prototyped spell. Similarly, if an effect creates a token that's a copy of a prototyped permanent or causes another permanent to become a copy of it, the copy would have the same characteristics as the prototyped permanent.

  3. 2022-10-14

    Regardless of how it was cast, a prototype card always has the same name, abilities, types, and so on. Only the mana cost, mana value, color, power, and toughness change depending on whether the card was cast as a prototyped spell.

  4. 2022-10-14

    The prototype ability functions in any zone that the spell could be cast from. For example, if an effect allows you to cast artifact spells from your graveyard, you could cast a prototyped Blitz Automaton from your graveyard.

  5. 2022-10-14

    A prototype card is a colorless card in every zone except the stack or the battlefield, as well as while on the stack or the battlefield if not cast as a prototyped spell. Ignore its alternative characteristics in those cases. For example, while it's in your graveyard, Blitz Automaton is a colorless creature card with mana value 7. It can't be the target of Recommission, a spell that targets an artifact or creature card with mana value 3 or less in your graveyard.

  6. 2022-10-14

    When cast as a prototyped spell, that spell has the mana cost, power, and toughness characteristics shown in its colored, secondary text box rather than the normal values of those characteristics. Its color and mana value are determined by that mana cost. The permanent that spell becomes as it resolves has the same characteristics. If the spell leaves the stack in any other way, or the permanent it becomes leaves the battlefield, it immediately resumes using its normal characteristics.

  7. 2022-10-14

    When casting a prototyped spell, use only its prototype characteristics to determine whether it's legal to cast it. For example, if Blitz Automaton is exiled with the last ability of Chandra, Dressed to Kill, you would be able to cast it for two generic manaone red mana (because it's a red spell), even though you wouldn't be able to cast it as a colorless spell for its normal cost.

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