Mercenary Informer is a rare Creature — Human Rebel Mercenary card from Prophecy (PCY), collector number 15. Current market price: $0.36 (foil $3.35), TCGplayer market prices via Scryfall.
This creature can't be the target of black spells or abilities from black sources. {2}{W}: Put target nontoken Mercenary on the bottom of its owner's library.