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| Set: | The Brothers' War Retro Artifacts |
| Type: | Artifact Creature — Construct |
| Rarity: | Uncommon |
| Cost: | {3} |
Artifact spells you cast cost {1} less to cast.
“Delicate resonance detectors could scan the assembly lines for metallic impurities, loose bolts, and freak occurrences of sentience.”
—Tawnos, proposal for overeseer prototype