The Lost Caverns of Ixalan

Armored Kincaller | Creature | Dinosaur | When Armored Kincaller enters the battlefield, you may reveal a Dinosaur card from your hand. If you do or if you control another Dinosaur, you gain 3 life. | 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

Huatli, Poet of Unity // Roar of the Fifth People | Legendary Creature // Enchantment | Human Warrior Bard // Saga | When Huatli, Poet of Unity enters, search your library for a basic land card, reveal it, put it into your hand, then shuffle. {3}{R/W}{R/W}: Exile Huatli, then return her to the battlefield transformed under her owner's control. Activate only as a sorcery. // (As this Saga enters and after your draw step, add a lore counter. Sacrifice after IV.) I — Create two 3/3 green Dinosaur creature tokens. II — Roar of the Fifth People gains "Creatures you control have '{T}: Add {R}, {G}, or {W}.'" III — Search your library for a Dinosaur card, reveal it, put it into your hand, then shuffle. IV — Dinosaurs you control gain double strike and trample until end of turn. | Tyler Jacobson

Pugnacious Hammerskull | Creature | Dinosaur | Whenever Pugnacious Hammerskull attacks while you don't control another Dinosaur, put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.) | Kev Walker

River Herald Guide | Creature | Merfolk Scout | Vigilance When River Herald Guide 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.) | David Astruga

Sentinel of the Nameless City | Creature | Merfolk Warrior Scout | Vigilance Whenever Sentinel of the Nameless City enters the battlefield or attacks, create a Map token. (It's an artifact with "{1}, {T}, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.") | Josu Hernaiz

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

The Mycotyrant | Legendary Creature | Elder Fungus | Trample The Mycotyrant's power and toughness are each equal to the number of creatures you control that are Fungi and/or Saprolings. At the beginning of your end step, create X 1/1 black Fungus creature tokens with "This creature can't block," where X is the number of times you descended this turn. (You descend each time a permanent card is put into your graveyard from anywhere.) | Chase Stone