The Lost Caverns of Ixalan

Cosmium Confluence | Sorcery | | Choose three. You may choose the same mode more than once. • Search your library for a Cave card, put it onto the battlefield tapped, then shuffle. • Put three +1/+1 counters on a Cave you control. It becomes a 0/0 Elemental creature with haste. It's still a land. • Destroy target enchantment. | Kasia 'Kafis' Zielińska

Malamet Veteran | Creature | Cat Warrior | Trample Descend 4 — Whenever Malamet Veteran attacks, if there are four or more permanent cards in your graveyard, put a +1/+1 counter on target creature. | Steve Prescott

Ojer Kaslem, Deepest Growth // Temple of Cultivation | Legendary Creature // Land | God // | Trample Whenever Ojer Kaslem deals combat damage to a player, reveal that many cards from the top of your library. You may put a creature card and/or a land card from among them onto the battlefield. Put the rest on the bottom in a random order. When Ojer Kaslem dies, return it to the battlefield tapped and transformed under its owner's control. // (Transforms from Ojer Kaslem, Deepest Growth.) {T}: Add {G}. {2}{G}, {T}: Transform Temple of Cultivation. Activate only if you control ten or more permanents and only as a sorcery. | Ryan Pancoast

Walk with the Ancestors | Sorcery | | Return up to one target permanent card from your graveyard to your hand. Discover 4. (Exile cards from the top of your library until you exile a nonland card with mana value 4 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.) | Loïc Canavaggia

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