War of the Spark

Burning Prophet | Creature | Human Wizard | Whenever you cast a noncreature spell, Burning Prophet gets +1/+0 until end of turn, then scry 1. | Mathias Kollros

Chandra's Pyrohelix | Instant | | Chandra's Pyrohelix deals 2 damage divided as you choose among one or two targets. | Aleksi Briclot

Chandra's Triumph | Instant | | Chandra's Triumph deals 3 damage to target creature or planeswalker an opponent controls. Chandra's Triumph deals 5 damage instead if you control a Chandra planeswalker. | Kieran Yanner

Dreadhorde Arcanist | Creature | Zombie Wizard | Trample Whenever Dreadhorde Arcanist attacks, you may cast target instant or sorcery card with mana value less than or equal to Dreadhorde Arcanist's power from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead. | G-host Lee

Finale of Promise | Sorcery | | You may cast up to one target instant card and/or up to one target sorcery card from your graveyard each with mana value X or less without paying their mana costs. If a spell cast this way would be put into your graveyard, exile it instead. If X is 10 or more, copy each of those spells twice. You may choose new targets for the copies. | Jaime Jones

Goblin Assailant | Creature | Goblin Warrior | | Jesper Ejsing

Heartfire | Instant | | As an additional cost to cast this spell, sacrifice a creature or planeswalker. Heartfire deals 4 damage to any target. | Craig J Spearing

Jaya's Greeting | Instant | | Jaya's Greeting deals 3 damage to target creature. Scry 1. | Victor Adame Minguez

Nahiri's Stoneblades | Instant | | Up to two target creatures each get +2/+0 until end of turn. | Micah Epstein

Tibalt's Rager | Creature | Devil | When Tibalt's Rager dies, it deals 1 damage to any target. {1}{R}: Tibalt's Rager gets +2/+0 until end of turn. | Yongjae Choi

Tenth District Legionnaire | Creature | Human Soldier | Haste Whenever you cast a spell that targets Tenth District Legionnaire, put a +1/+1 counter on Tenth District Legionnaire, then scry 1. | Victor Adame Minguez

Angrath's Rampage | Sorcery | | Choose one — • Target player sacrifices an artifact. • Target player sacrifices a creature. • Target player sacrifices a planeswalker. | Victor Adame Minguez

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

Domri's Ambush | Sorcery | | Put a +1/+1 counter on target creature you control. Then that creature deals damage equal to its power to target creature or planeswalker you don't control. | Victor Adame Minguez