Juri, Master of the Revue gains infinite +1/+1 counters, which means you can sacrifice it at any time in this loop to take someone out individually
The precedent was set by the Card not found, so apparently this is now a turtle thing, and again, it does match the flavor
However, the difference lies in their keywords
Reaver Drone can slowly kill us unless we have another colorless creature in play, and Ghostfire Blade becomes much stronger if all of our creatures are colorless
Nevertheless, Dig Through Time, like Treasure Cruise, was extremely powerful in Standard, very pushy but overall a really positive contribution to the format that helped make Khans of Tarkir one of the best-designed sets the game has ever seen
First edition cards from the earliest Pokemon sets are valuable because so few people kept them pristine - and nobody hoarded them