Cyclopean Tomb (Retro) [30th Anniversary Edition] 73 I can no longer recall

I can no longer recall where I found it

Set: Sword & Shield: Fusion Strike Type: Grass Rarity: Ultra Rare Retreat cost: Colorless

Set: March of the Machine Prerelease Promos Type: Legendary Artifact Rarity: Rare Cost: {1}{G} If one or more +1/+1 counters would be put on an artifact or creature you control

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Cyclopean Tomb (Retro) [30th Anniversary Edition] 73 I can no longer recallSet: 30th Anniversary Edition Type: Artifact Rarity: Rare Cost: {4} {2}, {T}: Put a mire counter on target non Swamp land. That land is a Swamp for as long as it has a mire counter on it. Activate only during your upkeep. When Cyclopean Tomb is put into a graveyard from the battlefield, at the beginning of each of your upkeeps for the rest of the game, remove all mire counters from a land that a mire counter was put onto with Cyclopean Tomb but that a