Sorin, Grim Nemesis is a mythic Legendary Planeswalker — Sorin card from Secret Lair Drop (SLD), collector number 400. Current market price: $8.15 (foil $7.98), TCGplayer market prices via Scryfall.
+1: Reveal the top card of your library and put that card into your hand. Each opponent loses life equal to its mana value. −X: Sorin deals X damage to target creature or planeswalker and you gain X life. −9: Create a number of 1/1 black Vampire Knight creature tokens with lifelink equal to the highest life total among all players.