Yanling's Harbinger is a rare Creature — Bird card from Core Set 2020 (M20), collector number 289. Current market price: $0.25, TCGplayer market prices via Scryfall.
Flying When this creature enters, you may search your library and/or graveyard for a card named Mu Yanling, Celestial Wind, reveal it, and put it into your hand. If you search your library this way, shuffle.