War of the Spark

Ob Nixilis's Cruelty | Instant | | Target creature gets -5/-5 until end of turn. If that creature would die this turn, exile it instead. | Igor Kieryluk

Shriekdiver | Creature | Zombie Bird Warrior | Flying {1}: Shriekdiver gains haste until end of turn. | Piotr Dura

Spark Reaper | Creature | Zombie | {3}, Sacrifice a creature or planeswalker: You gain 1 life and draw a card. | Zoltan Boros

Toll of the Invasion | Sorcery | | Target opponent reveals their hand. You choose a nonland card from it. That player discards that card. 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.) | Joe Slucher

Vraska's Finisher | Creature | Gorgon Assassin | When Vraska's Finisher enters the battlefield, destroy target creature or planeswalker an opponent controls that was dealt damage this turn. | Igor Kieryluk