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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.
Abilities, attacks, weakness & resistance
Other cards from The Brothers' War
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Autonomous Assembler (BRO-34) is an Artifact Creature — Assembly-Worker from The Brothers' War set. It has Prototype {1}{W} allowing it to be cast as a 2/2 for that cost, and normally is a 5/5 with vigilance that can grow Assembly-Workers via {1}, {T}: put a +1/+1 counter on target Assembly-Worker you control. It supports tribal/artifact strategies by both providing a resilient attacker with vigilance and an activation that boosts other Assembly-Workers.
Catalog pricing data as of 21 Apr 2026, 06:39
