Yomiji, Who Bars the Way is a rare Legendary Creature — Spirit card from Betrayers of Kamigawa (BOK), collector number 30. Current market price: $1.74 (foil $10.25), TCGplayer market prices via Scryfall.
Whenever a legendary permanent other than Yomiji is put into a graveyard from the battlefield, return that card to its owner's hand.