Tivash, Gloom Summoner is a rare Legendary Creature — Human Warlock card from Commander 2021 (C21), collector number 372. Current market price: $1.07, TCGplayer market prices via Scryfall.
Lifelink At the beginning of your end step, if you gained life this turn, you may pay X life, where X is the amount of life you gained this turn. If you do, create an X/X black Demon creature token with flying.