War of the Spark

Ashiok's Skulker | Creature | Nightmare | {3}{U}: Ashiok's Skulker can't be blocked this turn. | Livia Prima

Aven Eternal | Creature | Zombie Bird Warrior | Flying When Aven Eternal 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.) | Johan Grenier

Erratic Visionary | Creature | Human Wizard | {1}{U}, {T}: Draw a card, then discard a card. | Randy Vargas

Kiora's Dambreaker | Creature | Leviathan | When Kiora's Dambreaker enters the battlefield, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.) | Mathias Kollros

Naga Eternal | Creature | Zombie Naga | | Johann Bodin

Sky Theater Strix | Creature | Bird | Flying Whenever you cast a noncreature spell, Sky Theater Strix gets +1/+0 until end of turn. | Chris Seaman

Spellkeeper Weird | Creature | Weird | {2}, {T}, Sacrifice Spellkeeper Weird: Return target instant or sorcery card from your graveyard to your hand. | James Paick

Thunder Drake | Creature | Elemental Drake | Flying Whenever you cast your second spell each turn, put a +1/+1 counter on Thunder Drake. | Yeong-Hao Han

Wall of Runes | Creature | Wall | Defender (This creature can't attack.) When Wall of Runes enters the battlefield, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) | Zezhou Chen