The Lost Caverns of Ixalan

Market Gnome | Artifact Creature | Gnome | When Market Gnome dies, you gain 1 life and draw a card. When Market Gnome is exiled from the battlefield while you're activating a craft ability, you gain 1 life and draw a card. | Gaboleps

Miner's Guidewing | Creature | Bird | Flying, vigilance When Miner's Guidewing dies, target creature you control 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 that creature, then put the card back or put it into your graveyard.) | Allen Douglas

Ruin-Lurker Bat | Creature | Bat | Flying, lifelink At the beginning of your end step, if you descended this turn, scry 1. (You descended if a permanent card was put into your graveyard from anywhere.) | Camille Alquier

Warden of the Inner Sky | Creature | Human Soldier | As long as Warden of the Inner Sky has three or more counters on it, it has flying and vigilance. Tap three untapped artifacts and/or creatures you control: Put a +1/+1 counter on Warden of the Inner Sky. Scry 1. Activate only as a sorcery. | Raoul Vitale

Cogwork Wrestler | Artifact Creature | Gnome | Flash When Cogwork Wrestler enters the battlefield, target creature an opponent controls gets -2/-0 until end of turn. | Tomek Larek

Spyglass Siren | Creature | Siren Pirate | Flying When Spyglass Siren enters the battlefield, create a Map token. (It's an artifact with "{1}, {T}, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.") | David Astruga

Greedy Freebooter | Creature | Human Pirate | When Greedy Freebooter dies, scry 1 and create a Treasure token. (To scry 1, look at the top card of your library. You may put that card on the bottom. A Treasure token is an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") | David Palumbo

Stalactite Stalker | Creature | Goblin Rogue | Menace At the beginning of your end step, if you descended this turn, put a +1/+1 counter on Stalactite Stalker. {2}{B}, Sacrifice Stalactite Stalker: Target creature gets -X/-X until end of turn, where X is Stalactite Stalker's power. | Olivier Bernard

Goblin Tomb Raider | Creature | Goblin Pirate | As long as you control an artifact, Goblin Tomb Raider gets +1/+0 and has haste. | Kevin Sidharta

Cenote Scout | Creature | Merfolk Scout | When Cenote Scout 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.) | Caroline Gariba

Ixalli's Lorekeeper | Creature | Human Druid | {T}: Add one mana of any color. Spend this mana only to cast a Dinosaur spell or activate an ability of a Dinosaur source. | Ernanda Souza

Jadelight Spelunker | Creature | Merfolk Scout | When Jadelight Spelunker enters the battlefield, it explores X times. (To have it explore, 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 that creature, then put the card back or put it into your graveyard.) | Izzy

Seeker of Sunlight | Creature | Merfolk Scout | {2}{G}: Seeker of Sunlight explores. Activate only as a sorcery. (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.) | Randy Vargas