Deep Reconnaissance is a uncommon Sorcery card from Odyssey (ODY), collector number 236. Current market price: $0.10 (foil $7.90), TCGplayer market prices via Scryfall.
Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Flashback {4}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)