Oblivion Stone is a special Artifact card from Kaladesh Inventions (MPS), collector number 41. Current market price: — (foil $53.18), TCGplayer market prices via Scryfall.
{4}, {T}: Put a fate counter on target permanent. {5}, {T}, Sacrifice this artifact: Destroy each nonland permanent without a fate counter on it, then remove all fate counters from all permanents.