The Shovel allows you to dig for loot at Rest Sites. The "Dig" option is added to each Rest Site, which grants the player a random relic. The Shovel cannot dig up relics exclusive to Bosses or the Shop.
Choosing to Dig prevents the player from doing anything else at that Rest Site, just like Peace Pipe and Girya.
This relic does not spawn beyond floor 48, excluding Endless mode.
Weekly Patch 52: Release Date Price Increase
Fixed issue that caused Shovel, Girya, and Peace Pipe to incorrectly spawn when they should not.