Korlash, Heir to Blackblade is a rare Legendary Creature — Zombie Warrior card from Future Sight (FUT), collector number 87. Current market price: $3.22 (foil $30.25), TCGplayer market prices via Scryfall.
Korlash's power and toughness are each equal to the number of Swamps you control. {1}{B}: Regenerate Korlash. Grandeur — Discard another card named Korlash, Heir to Blackblade: Search your library for up to two Swamp cards, put them onto the battlefield tapped, then shuffle.