Excavation Technique is a rare Sorcery card from The List (PLST), collector number C21-16. Current market price: $0.17, TCGplayer market prices via Scryfall.
Demonstrate (When you cast this spell, you may copy it. If you do, choose an opponent to also copy it. Players may choose new targets for their copies.) Destroy target nonland permanent. Its controller creates two Treasure tokens.