War of the Spark

Dovin, Hand of Control | Legendary Planeswalker | Dovin | Artifact, instant, and sorcery spells your opponents cast cost {1} more to cast. −1: Until your next turn, prevent all damage that would be dealt to and dealt by target permanent an opponent controls. | Kieran Yanner

Kaya, Bane of the Dead | Legendary Planeswalker | Kaya | Your opponents and permanents your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof. −3: Exile target creature. | Magali Villeneuve

Nahiri, Storm of Stone | Legendary Planeswalker | Nahiri | As long as it's your turn, creatures you control have first strike and equip abilities you activate cost {1} less to activate. −X: Nahiri, Storm of Stone deals X damage to target tapped creature. | Aleksi Briclot

Huatli, the Sun's Heart | Legendary Planeswalker | Huatli | Each creature you control assigns combat damage equal to its toughness rather than its power. −3: You gain life equal to the greatest toughness among creatures you control. | Lius Lasahido

Ashiok, Dream Render | Legendary Planeswalker | Ashiok | Spells and abilities your opponents control can't cause their controller to search their library. −1: Target player mills four cards. Then exile each opponent's graveyard. | Cynthia Sheppard

Saheeli, Sublime Artificer | Legendary Planeswalker | Saheeli | Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token. −2: Target artifact you control becomes a copy of another target artifact or creature you control until end of turn, except it's an artifact in addition to its other types. | Wesley Burt

Kiora, Behemoth Beckoner | Legendary Planeswalker | Kiora | Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card. −1: Untap target permanent. | Jaime Jones

Angrath, Captain of Chaos | Legendary Planeswalker | Angrath | Creatures you control have menace. −2: 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.) | Slawomir Maniak

Vraska, Swarm's Eminence | Legendary Planeswalker | Vraska | Whenever a creature you control with deathtouch deals damage to a player or planeswalker, put a +1/+1 counter on that creature. −2: Create a 1/1 black Assassin creature token with deathtouch and "Whenever this creature deals damage to a planeswalker, destroy that planeswalker." | Anna Steinbauer

Samut, Tyrant Smasher | Legendary Planeswalker | Samut | Creatures you control have haste. −1: Target creature gets +2/+1 and gains haste until end of turn. Scry 1. | Aleksi Briclot