The Lost Caverns of Ixalan

Kinjalli's Dawnrunner | Creature | Human Scout | Double strike When Kinjalli's Dawnrunner 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.) | Arash Radkia

Mischievous Pup | Creature | Dog | Flash When Mischievous Pup enters the battlefield, return up to one other target permanent you control to its owner's hand. | Devin Platts

Merfolk Cave-Diver | Creature | Merfolk Scout | Whenever a creature you control explores, Merfolk Cave-Diver gets +1/+0 until end of turn and can't be blocked this turn. | Fesbra

Soulcoil Viper | Creature | Snake | {B}, {T}, Sacrifice Soulcoil Viper: Return target creature card from your graveyard to the battlefield with a finality counter on it. Activate only as a sorcery. (If a creature with a finality counter on it would die, exile it instead.) | Allen Douglas

Stinging Cave Crawler | Creature | Insect Horror | Deathtouch Descend 4 — Whenever Stinging Cave Crawler attacks, if there are four or more permanent cards in your graveyard, you draw a card and you lose 1 life. | Dan Scott

Synapse Necromage | Creature | Fungus Wizard | When Synapse Necromage dies, create two 1/1 black Fungus creature tokens with "This creature can't block." | Piotr Foksowicz

Scytheclaw Raptor | Creature | Dinosaur | Whenever a player casts a spell, if it's not their turn, Scytheclaw Raptor deals 4 damage to them. | John Tedrick

Coati Scavenger | Creature | Raccoon | Descend 4 — When Coati Scavenger enters the battlefield, if there are four or more permanent cards in your graveyard, return target permanent card from your graveyard to your hand. | Alessandra Pisano

Thrashing Brontodon | Creature | Dinosaur | {1}, Sacrifice Thrashing Brontodon: Destroy target artifact or enchantment. | Randy Vargas

Kutzil, Malamet Exemplar | Legendary Creature | Cat Warrior | Your opponents can't cast spells during your turn. Whenever one or more creatures you control each with power greater than its base power deals combat damage to a player, draw a card. | Marie Magny

Akawalli, the Seething Tower | Legendary Creature | Fungus | Descend 4 — As long as there are four or more permanent cards in your graveyard, Akawalli, the Seething Tower gets +2/+2 and has trample. Descend 8 — As long as there are eight or more permanent cards in your graveyard, Akawalli gets an additional +2/+2 and can't be blocked by more than one creature. | Simon Dominic