Gisa's Favorite Shovel is a mythic Legendary Artifact — Equipment card from Universes Within (SLX), collector number 19. Current market price: $23.44, TCGplayer market prices via Scryfall.
Equipped creature gets +2/+0 and has menace. Whenever equipped creature attacks, defending player sacrifices a creature of their choice. If they do, you create a Walker token. Equip {4}