The Lost Caverns of Ixalan

Adaptive Gemguard | Artifact Creature | Gnome | Tap two untapped artifacts and/or creatures you control: Put a +1/+1 counter on Adaptive Gemguard. Activate only as a sorcery. | Anthony Devine

Oltec Cloud Guard | Creature | Human Soldier | Flying When Oltec Cloud Guard enters the battlefield, create a 1/1 colorless Gnome artifact creature token. | Evyn Fong

Frilled Cave-Wurm | Creature | Salamander Wurm | Descend 4 — Frilled Cave-Wurm gets +2/+0 as long as there are four or more permanent cards in your graveyard. | Aaron Miller

Waylaying Pirates | Creature | Human Pirate | When Waylaying Pirates enters the battlefield, if you control an artifact, tap target artifact or creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) | Zoltan Boros

Broodrage Mycoid | Creature | Fungus | At the beginning of your end step, if you descended this turn, create a 1/1 black Fungus creature token with "This creature can't block." (You descended if a permanent card was put into your graveyard from anywhere.) | Domenico Cava

Vito's Inquisitor | Creature | Vampire Knight | {B}, Sacrifice another creature or artifact: Put a +1/+1 counter on Vito's Inquisitor. It gains menace until end of turn. | Anna Pavleeva

Child of the Volcano | Creature | Elemental | Trample At the beginning of your end step, if you descended this turn, put a +1/+1 counter on Child of the Volcano. (You descended if a permanent card was put into your graveyard from anywhere.) | Uriah Voth

Dinotomaton | Artifact Creature | Dinosaur Gnome | Menace (This creature can't be blocked except by two or more creatures.) When Dinotomaton enters the battlefield, target creature you control gains menace until end of turn. | Zoltan Boros

Mineshaft Spider | Creature | Spider | Reach When Mineshaft Spider enters the battlefield, you may mill two cards. (You may put the top two cards of your library into your graveyard.) | Sam Rowan

Pathfinding Axejaw | Creature | Dinosaur | When Pathfinding Axejaw enters the battlefield, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.) | Raoul Vitale

Disruptor Wanderglyph | Artifact Creature | Golem | Whenever Disruptor Wanderglyph attacks, exile target card from an opponent's graveyard. | Izzy