War of the Spark

When Gleaming Overseer 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 Z...

This spell can't be countered. Counter target noncreature spell.

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...

Exile target permanent with mana value 4 or greater.

Destroy target creature. Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

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...

Paradise Druid has hexproof as long as it's untapped. (It can't be the target of spells or abilities your opponents control.) {T}: Add one mana of...

Flying Whenever Grateful Apparition deals combat damage to a player or planeswalker, proliferate. (Choose any number of permanents and/or players, ...

Vigilance, trample If one or more +1/+1 counters would be put on Mowu, Loyal Companion, that many plus one +1/+1 counters are put on it instead.

Each creature you control with a +1/+1 counter on it has "{T}: Add one mana of any color." [-1]: Put a +1/+1 counter on target creature.

Each creature you control with a +1/+1 counter on it has "{T}: Add one mana of any color." [-1]: Put a +1/+1 counter on target creature.

Each creature you control that's a Wolf or a Werewolf enters the battlefield with an additional +1/+1 counter on it. [-2]: Create a 2/2 green Wolf...

Each creature you control that's a Wolf or a Werewolf enters the battlefield with an additional +1/+1 counter on it. [-2]: Create a 2/2 green Wolf...

Target opponent sacrifices a creature that attacked or blocked this turn. If you control a Gideon planeswalker, that player sacrifices two of those...

Your opponents can't gain life. [-2]: Create a 1/1 red Devil creature token with "When this creature dies, it deals 1 damage to any target."

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....

When Dreadhorde Twins 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...

Whenever an opponent draws a card, Ob Nixilis, the Hate-Twisted deals 1 damage to that player. [-2]: Destroy target creature. Its controller draws ...

Whenever an opponent draws a card, Ob Nixilis, the Hate-Twisted deals 1 damage to that player. [-2]: Destroy target creature. Its controller draws ...

Each opponent can't draw more than one card each turn. [−2]: Look at the top four cards of your library. You may reveal a noncreature, nonland card...

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 ...

Creatures you control have haste. [−1]: Target creature gets +2/+1 and gains haste until end of turn. Scry 1.

Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token. [−2]: Target artifact you control becomes a copy of an...

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...