Death's Shadow
Worldwake — rare
Creature — Avatar
Death's Shadow rulings:
2020-08-07: Death's Shadow's ability applies only while Death's Shadow is on the battlefield. In all other zones, its power and toughness are 13.
2020-08-07: The value of X changes as you gain and lose life. It's not locked in as Death's Shadow enters the battlefield.
2020-08-07: If your life total is negative, X is considered to be 0.
2020-08-07: In a Two-Headed Giant game, your life total is your team's life total.