When Necromancer's Covenant enters the battlefield, exile all creature cards from target player's graveyard, then create a 2/2 black Zombie creature token for each card exiled this way.
Zombies you control have lifelink.
Thomas M. Baxa
The Zombie tokens are put onto the battlefield under your control.
Necromancerâ€™s Covenant grants lifelink to all Zombies you control, not just the tokens put onto the battlefield with its first ability.