The Lost Caverns of Ixalan

Growing Rites of Itlimoc // Itlimoc, Cradle of the Sun | Legendary Enchantment // Legendary Land | | When Growing Rites of Itlimoc enters, look at the top four cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in any order. At the beginning of your end step, if you control four or more creatures, transform Growing Rites of Itlimoc. // (Transforms from Growing Rites of Itlimoc.) {T}: Add {G}. {T}: Add {G} for each creature you control. | Josu Hernaiz

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

Squirming Emergence | Sorcery | | Fathomless descent — Return to the battlefield target nonland permanent card in your graveyard with mana value less than or equal to the number of permanent cards in your graveyard. | Simon Dominic