Deep Reconnaissance is a uncommon Sorcery card from The List (PLST), collector number ODY-236. Current market price: $0.21, 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.)