Obscura Storefront is a common Land card from Duskmourn: House of Horror Commander (DSC), collector number 291. Current market price: $0.31, TCGplayer market prices via Scryfall.
When this land enters, sacrifice it. When you do, search your library for a basic Plains, Island, or Swamp card, put it onto the battlefield tapped, then shuffle and you gain 1 life.