War of the Spark

Commence the Endgame | Instant | | This spell can't be countered. Draw two cards, then amass X, where X is the number of cards in your hand. (Put X +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.) | Noah Bradley

Fblthp, the Lost | Legendary Creature | Homunculus | When Fblthp, the Lost enters the battlefield, draw a card. If it entered from your library or was cast from your library, draw two cards instead. When Fblthp becomes the target of a spell, shuffle Fblthp into its owner's library. | Jesper Ejsing

Jace, Wielder of Mysteries | Legendary Planeswalker | Jace | If you would draw a card while your library has no cards in it, you win the game instead. +1: Target player mills two cards. Draw a card. −8: Draw seven cards. Then if your library has no cards in it, you win the game. | Anna Steinbauer

Narset's Reversal | Instant | | Copy target instant or sorcery spell, then return it to its owner's hand. You may choose new targets for the copy. | Viktor Titov

Silent Submersible | Artifact | Vehicle | Whenever Silent Submersible deals combat damage to a player or planeswalker, draw a card. Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.) | Daniel Ljunggren

Spark Double | Creature | Illusion | You may have Spark Double enter the battlefield as a copy of a creature or planeswalker you control, except it enters with an additional +1/+1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary. | Eric Deschamps

Teferi, Time Raveler | Legendary Planeswalker | Teferi | Each opponent can cast spells only any time they could cast a sorcery. +1: Until your next turn, you may cast sorcery spells as though they had flash. −3: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card. | Chris Rallis

Time Wipe | Sorcery | | Return a creature you control to its owner's hand, then destroy all creatures. | Svetlin Velinov

Enter the God-Eternals | Sorcery | | Enter the God-Eternals deals 4 damage to target creature and you gain life equal to the damage dealt this way. Target player mills four cards. Amass 4. (Put four +1/+1 counters on an Army you control. If you don't control one, create a 0/0 black Zombie Army creature token first.) | Daniel Ljunggren

Soul Diviner | Creature | Zombie Wizard | {T}, Remove a counter from an artifact, creature, land, or planeswalker you control: Draw a card. | Randy Vargas

Ral, Storm Conduit | Legendary Planeswalker | Ral | Whenever you cast or copy an instant or sorcery spell, Ral, Storm Conduit deals 1 damage to target opponent or planeswalker. +2: Scry 1. −2: When you cast your next instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy. | Wesley Burt

Role Reversal | Sorcery | | Exchange control of two target permanents that share a permanent type. | Mathias Kollros

Bioessence Hydra | Creature | Hydra Mutant | Trample Bioessence Hydra enters the battlefield with a +1/+1 counter on it for each loyalty counter on planeswalkers you control. Whenever one or more loyalty counters are put on planeswalkers you control, put that many +1/+1 counters on Bioessence Hydra. | Mathias Kollros

Tamiyo, Collector of Tales | Legendary Planeswalker | Tamiyo | Spells and abilities your opponents control can't cause you to discard cards or sacrifice permanents. +1: Choose a nonland card name, then reveal the top four cards of your library. Put all cards with the chosen name from among them into your hand and the rest into your graveyard. −3: Return target card from your graveyard to your hand. | Chase Stone