Lifelink

Vannie, Chained Shadow has hexproof and shadow as long as you have gained 5 or more life this turn.

{1}{B}, pay 3 life: Return target creature from a graveyard to the battlefield under its owners control with a puppet counter on it.

Next Step - At the end of your turn, if a player has 20 or less life, remove Vannie, Chained Shadow from the game. Vannie, the Usurper is your new commander.