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| Set: | The Brothers' War Retro Artifacts |
| Type: | Artifact Creature — Assembly-Worker |
| Rarity: | Uncommon |
| Cost: | {5} |
When Self-Assembler enters the battlefield, you may search your library for an Assembly-Worker creature card, reveal it, put it into your hand, then shuffle.
“Test 37: Sentience module is still too strong. It's adding ears again.”
—Development log of Willa, Yotian artificer