Khârn the Betrayer is a rare Legendary Creature — Astartes Berserker card from Warhammer 40,000 Commander (40K), collector number 79. Current market price: $6.48, TCGplayer market prices via Scryfall.
Berzerker — Khârn the Betrayer attacks or blocks each combat if able. Sigil of Corruption — When you lose control of Khârn the Betrayer, draw two cards. The Betrayer — If damage would be dealt to Khârn the Betrayer, prevent that damage and an opponent of your choice gains control of it.