The Lost Caverns of Ixalan

Bedrock Tortoise | Creature | Turtle | As long as it's your turn, creatures you control have hexproof. Each creature you control with toughness greater than its power assigns combat damage equal to its toughness rather than its power. | Maxime Minard

Hulking Raptor | Creature | Dinosaur | Ward {2} At the beginning of your precombat main phase, add {G}{G}. | Nestor Ossandon Leal

Intrepid Paleontologist | Creature | Human Druid | {T}: Add one mana of any color. {2}: Exile target card from a graveyard. You may cast Dinosaur creature spells from among cards you own exiled with Intrepid Paleontologist. If you cast a spell this way, that creature enters the battlefield with a finality counter on it. (If a creature with a finality counter on it would die, exile it instead.) | Irina Nordsol

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

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

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

Deepfathom Echo | Creature | Merfolk Spirit | At the beginning of combat on your turn, Deepfathom Echo explores. Then you may have it become a copy of another creature you control until end of turn. (To have this creature 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 this creature, then put the card back or put it into your graveyard.) | Matt Stewart

Palani's Hatcher | Creature | Dinosaur | Other Dinosaurs you control have haste. When Palani's Hatcher enters the battlefield, create two 0/1 green Dinosaur Egg creature tokens. At the beginning of combat on your turn, if you control one or more Eggs, sacrifice an Egg, then create a 3/3 green Dinosaur creature token. | Aaron Miller