Fake Your Own Death is a common Instant card from Outlaws of Thunder Junction (OTJ), collector number 87. Current market price: $0.11 (foil $0.37), TCGplayer market prices via Scryfall.
Until end of turn, target creature gets +2/+0 and gains "When this creature dies, return it to the battlefield tapped under its owner's control and you create a Treasure token." (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")