Vraska's Final Mercy is a rare Sorcery card from Reality Fracture (FRA), collector number 343. Current market price: $0.41 (foil $0.87), TCGplayer market prices via Scryfall.
Choose one — • You lose 2 life. Destroy target creature or planeswalker. • You lose 2 life. Empower Jace 6. (Put six loyalty counters on a Jace token you control. If you don't control one, first create a blue Jace planeswalker token with "[−1]: Surveil 1" and "[−3]: Draw a card.")