Sorin Markov [Mystery Booster] Dark Animal/X Antibody/SoC Mournful Avenger has indestructible as

Mournful Avenger has indestructible as long as two or more creatures died under your control this turn

Set: Kaladesh Prerelease Promos Type: Sorcery Rarity: Rare Cost: {3}{G} Look at the top ten cards of your library

It burns with the very fire that doomed Szarekh's species

Suspect it

" —Commmander Zander At'lan

Sorin Markov [Mystery Booster] Dark Animal/X Antibody/SoC Mournful Avenger has indestructible asSet: Mystery Booster Type: Legendary Planeswalker Sorin Rarity: Mythic Cost: {3}{B}{B}{B} +2: Sorin Markov deals 2 damage to any target and you gain 2 life. 3: Target opponent's life total becomes 10. 7: You control target player during that player's next turn.