War of the Spark

Bond of Discipline | Sorcery | | Tap all creatures your opponents control. Creatures you control gain lifelink until end of turn. | Zezhou Chen

Eternal Skylord | Creature | Zombie Wizard | When Eternal Skylord enters the battlefield, amass 2. (Put two +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.) Zombie tokens you control have flying. | Johan Grenier

Bond of Revival | Sorcery | | Return target creature card from your graveyard to the battlefield. It gains haste until your next turn. | Lake Hurwitz

Ob Nixilis, the Hate-Twisted | Legendary Planeswalker | Nixilis | Whenever an opponent draws a card, Ob Nixilis, the Hate-Twisted deals 1 damage to that player. −2: Destroy target creature. Its controller draws two cards. | Yongjae Choi

Cyclops Electromancer | Creature | Cyclops Wizard | When Cyclops Electromancer enters the battlefield, it deals X damage to target creature an opponent controls, where X is the number of instant and sorcery cards in your graveyard. | Jason Felix

Jaya, Venerated Firemage | Legendary Planeswalker | Jaya | If another red source you control would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead. −2: Jaya, Venerated Firemage deals 2 damage to any target. | Yongjae Choi

Challenger Troll | Creature | Troll | Each creature you control with power 4 or greater can't be blocked by more than one creature. | Svetlin Velinov

Storm the Citadel | Sorcery | | Until end of turn, creatures you control get +2/+2 and gain "Whenever this creature deals combat damage to a player or planeswalker, destroy target artifact or enchantment defending player controls." | Grzegorz Rutkowski