Seize the Soul is a rare Instant card from Guildpact (GPT), collector number 61. Current market price: $0.34 (foil $0.25), TCGplayer market prices via Scryfall.
Destroy target nonwhite, nonblack creature. Create a 1/1 white Spirit creature token with flying. Haunt (When this spell card is put into a graveyard after resolving, exile it haunting target creature.) When the creature this card haunts dies, destroy target nonwhite, nonblack creature. Create a 1/1 white Spirit creature token with flying.