Ghoulish Procession 1B
Whenever one or more nontoken creatures die, create a 2/2 black Zombie creature token with decayed. This ability triggers only once each turn. A seedy family reunion.
If you're drafting Zombies already, you get to decrease your net loss from blockers with this on every player's turn. In multiplayer, this could give you 8 power per turn cycle.
Especially good if you already have Gisa--you get a 2/2 zombie for a creature's death then at your next upkeep you get the creature itself. After it attacks, you get another 2/2 zombie (albeit with decayed).