War of the Spark

Duskmantle Operative | Creature | Human Rogue | Duskmantle Operative can't be blocked by creatures with power 4 or greater. | Anna Steinbauer

Eternal Taskmaster | Creature | Zombie | Eternal Taskmaster enters the battlefield tapped. Whenever Eternal Taskmaster attacks, you may pay {2}{B}. If you do, return target creature card from your graveyard to your hand. | Tomasz Jedruszek

Lazotep Reaver | Creature | Zombie Beast | When Lazotep Reaver enters the battlefield, amass 1. (Put a +1/+1 counter on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.) | Craig J Spearing

Vampire Opportunist | Creature | Vampire | {6}{B}: Each opponent loses 2 life and you gain 2 life. | Jason Rainville

Cruel Celebrant | Creature | Vampire | Whenever Cruel Celebrant or another creature or planeswalker you control dies, each opponent loses 1 life and you gain 1 life. | Bastien L. Deharme

Soul Diviner | Creature | Zombie Wizard | {T}, Remove a counter from an artifact, creature, land, or planeswalker you control: Draw a card. | Randy Vargas

Dreadhorde Butcher | Creature | Zombie Warrior | Haste Whenever Dreadhorde Butcher deals combat damage to a player or planeswalker, put a +1/+1 counter on Dreadhorde Butcher. When Dreadhorde Butcher dies, it deals damage equal to its power to any target. | Piotr Dura