As an additional cost to cast Natural Order, sacrifice a green creature.
Search your library for a green creature card and put it onto the battlefield. Then shuffle your library.
. . . but the price of Mangara's freedom was Asmira's life.
Near Mint Condition
A card in Near Mint condition shows minimal to no wear from shuffling or general play. Cards classified as Near Mint/Mint are generally indistinguishable from cards in an unsleeved deck of other Near Mint/Mint cards. Foils in this condition have little or no scuffing or clouding on the front and edges of the card.