Krosan Verge is a uncommon Land card from Phyrexia: All Will Be One Commander (ONC), collector number 158. Current market price: $0.31, TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: Search your library for a Forest card and a Plains card, put them onto the battlefield tapped, then shuffle.