In your collection
0copies·$0.00
NMLPMPHPDMGTotal
Foil
Total
LangENPaid avg

Autonomous Assembler

pbroThe Brothers' War Promos#34srare
{5}
Treatments
FoilPrerelease
Market price · TCGplayer
updated 2026-06-22
Foil$0.33
Low $0.20Mid $0.51Buylist
All finishes · 30d
updated 1h ago
Foil$0.33 +6.5%
Card details
Artist
Slawomir Maniak
Frame
2015
Language
EN
Border
black
Security stamp
oval
Format legality
AlchemyNot legal
BrawlLegal
CommanderLegal
DuelLegal
Future StandardNot legal
GladiatorLegal
HistoricLegal
LegacyLegal
ModernLegal
OathbreakerLegal
Old SchoolNot legal
PauperNot legal
Pauper CommanderNot legal
PennyLegal
PioneerLegal
PreDHNot legal
PremodernNot legal
StandardNot legal
Standard BrawlNot legal
TimelessLegal
Tiny LeadersNot legal
VintageLegal
Oracle text

Artifact Creature — Assembly-Worker

Prototype {1}{W} — 2/2 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)

Vigilance

{1}, {T}: Put a +1/+1 counter on target Assembly-Worker you control.

P/T4/5
Abilities
Prototype {1}{W} — 2/2Vigilance
Activated{1}, {T}: Put a +1/+1 counter on target Assembly-Worker you control.
Flavor & art
Illustrated by
Slawomir Maniak
Rulings
  • WotCOct 14, 2022

    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.

  • WotCOct 14, 2022

    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.

  • WotCOct 14, 2022

    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.

  • WotCOct 14, 2022

    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.

  • WotCOct 14, 2022

    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.

  • WotCOct 14, 2022

    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.

  • WotCOct 14, 2022

    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 {2}{R} (because it's a red spell), even though you wouldn't be able to cast it as a colorless spell for its normal cost.