
Chasm Skulker | Creature | Squid Horror | Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.
When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.) | Jack Wang

Lifebane Zombie | Creature | Zombie Warrior | Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)
When Lifebane Zombie enters, target opponent reveals their hand. You choose a green or white creature card from it and exile that card. | Min Yum

Painful Truths | Sorcery | | Converge — You draw X cards and you lose X life, where X is the number of colors of mana spent to cast this spell. | Winona Nelson

Xathrid Necromancer | Creature | Human Wizard | Whenever Xathrid Necromancer or another Human creature you control dies, create a tapped 2/2 black Zombie creature token. | Maciej Kuciara

Exquisite Firecraft | Sorcery | | Exquisite Firecraft deals 4 damage to any target.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, this spell can't be countered. | Chase Stone

Goblin Rabblemaster | Creature | Goblin Warrior | Other Goblin creatures you control attack each combat if able.
At the beginning of combat on your turn, create a 1/1 red Goblin creature token with haste.
Whenever Goblin Rabblemaster attacks, it gets +1/+0 until end of turn for each other attacking Goblin. | Svetlin Velinov

Radiant Flames | Sorcery | | Converge — Radiant Flames deals X damage to each creature, where X is the number of colors of mana spent to cast this spell. | Slawomir Maniak

Hornet Nest | Creature | Insect | Defender (This creature can't attack.)
Whenever Hornet Nest is dealt damage, create that many 1/1 green Insect creature tokens with flying and deathtouch. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.) | Adam Paquette

Render Silent | Instant | | Counter target spell. Its controller can't cast spells this turn. | Matt Stewart

Boros Reckoner | Creature | Minotaur Wizard | Whenever Boros Reckoner is dealt damage, it deals that much damage to any target.
{R/W}: Boros Reckoner gains first strike until end of turn. | Howard Lyon

Counterflux | Instant | | This spell can't be countered.
Counter target spell you don't control.
Overload {1}{U}{U}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.") | Adrián Rodríguez Pérez