Endrek Sahr, Master Breeder is a rare Legendary Creature — Human Wizard card from Time Spiral (TSP), collector number 106. Current market price: $5.73 (foil $14.00), TCGplayer market prices via Scryfall.
Whenever you cast a creature spell, create X 1/1 black Thrull creature tokens, where X is that spell's mana value. When you control seven or more Thrulls, sacrifice Endrek Sahr.