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Equivalent cards in colorless that untap artifacts include:
1. Unwinding Clock – Untaps all artifacts you control during each other player's untap step.
2. Voltaic Key – Can tap to untap another artifact.
3. Manifold Key – Also taps to untap another artifact.
Reason: All are colorless cards that untap artifacts, similar to Clock of Omens.
| Color: |  |
| Identifies: | |
| Cost: |
 |
| Rarity: | Uncommon |
| Converted Cost: | 4 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: | 
         |
| Layout: | Normal |
| Rank: | |
| Saltiness: |
| Color: | |
| Identifies: | |
| Cost: |
 |
| Rarity: | Special |
| Converted Cost: | 1 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
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| Layout: | Normal |
| Rank: | |
| Saltiness: |
, 
: Untap another target artifact.
, : Target creature can't be blocked this turn. | Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Rare |
| Converted Cost: | 4 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
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| Layout: | Normal |
| Rank: | |
| Saltiness: |
| Seller | Price |
|---|---|
| Tcgplayer | 10.91 USD / 27.39 USD |
| Cardmarket | 8.59 EUR / 13.21 EUR |
| Cardkingdom | 39.99 USD |
| Cardsphere | 13.94 USD |
| Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Uncommon |
| Converted Cost: | 1 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: | |
| Saltiness: |
, : Untap target artifact. | Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Uncommon |
| Converted Cost: | 4 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: | |
| Saltiness: |
| Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Special |
| Converted Cost: | 1 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: | |
| Saltiness: |
, : Untap another target artifact.
, : Target creature can't be blocked this turn. | Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Rare |
| Converted Cost: | 4 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: | |
| Saltiness: |
| Seller | Price |
|---|---|
| Tcgplayer | 10.91 USD / 27.39 USD |
| Cardmarket | 8.59 EUR / 13.21 EUR |
| Cardkingdom | 39.99 USD |
| Cardsphere | 13.94 USD |
| Color: | |
| Identifies: | |
| Cost: |
|
| Rarity: | Uncommon |
| Converted Cost: | 1 |
| Power/Toughness: | / |
| Types: | |
| SubTypes: | |
| Languages: |
|
| Layout: | Normal |
| Rank: | |
| Saltiness: |
, : Untap target artifact. 
