Vraska, the Cutting Glare is a rare Legendary Creature — Gorgon Assassin card from Reality Fracture Promos (PFRA), collector number 278p.
Deathtouch When Vraska enters, if you control six or more lands, destroy target permanent an opponent controls. They create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")