Escape Tunnel is a common Land card from Murders at Karlov Manor (MKM), collector number 261. Current market price: $0.26 (foil $0.31), TCGplayer market prices via Scryfall.
{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. {T}, Sacrifice this land: Target creature with power 2 or less can't be blocked this turn.