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Unwinding Clock (Retro Schematic) [The Brothers' War Retro Artifacts]
| Set: | The Brothers' War Retro Artifacts |
| Type: | Artifact |
| Rarity: | Rare |
| Cost: | 4 |
Untap all artifacts you control during each other player's untap step.
"Heat from the rotating mechanism is captured and converted into energy, allowing it to operate in perpetuity."
—*Rusko's Compendium of Clockwork"