Description, catalog fields, rules text, and how it plays—in one place.
eBay sold comps from the Vendor Tools public catalog — tap a condition below to filter sales, or refresh to pull new data into the catalog
Tap for sold & listed comps
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 Magic Online Promos
Autonomous Assembler (PRM-105626) is an Artifact Creature — Assembly-Worker from the Magic Online Promos set. It has Prototype {1}{W} allowing it to be cast as a 2/2 for {1}{W}, Vigilance, and an activated ability that for {1} and tapping puts a +1/+1 counter on target Assembly-Worker you control. Its roles include providing immediate board presence when prototyped and serving as a counter-supporting synergy piece in Assembly-Worker tribal or artifact decks.
Catalog pricing data as of 20 Apr 2026, 12:52
Share your thoughts on this card — condition, value, pull rates, etc.
to comment.
No comments yet. Be the first to share your thoughts.
