The Soul Stone is a mythic Legendary Artifact — Infinity Stone card from Marvel's Spider-Man (SPM), collector number 243. Current market price: — (foil $1,856.74), TCGplayer market prices via Scryfall.
Indestructible {T}: Add {B}. {6}{B}, {T}, Exile a creature you control: Harness The Soul Stone. (Once harnessed, its ∞ ability is active.) ∞ — At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.