Markov Purifier
Creature — Vampire Cleric
Lifelink
At the beginning of your end step, if you gained life this turn, you may pay 
. If you do, draw a card.
Samuel Araya
Innistrad: Crimson Vow (VOW)
• #312Rulings
Markov Purifier's ability triggers if you gained any amount of life that turn, even if you also lost that much or more life.
(wotc • 2021-11-19)
Rulings
Markov Purifier's ability triggers if you gained any amount of life that turn, even if you also lost that much or more life.
(wotc • 2021-11-19)