The Lost Caverns of Ixalan

Defossilize | Sorcery | | Return target creature card from your graveyard to the battlefield. That creature explores, then it explores again. (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. Then repeat this process.) | Dibujante Nocturno

Malicious Eclipse | Sorcery | | All creatures get -2/-2 until end of turn. If a creature an opponent controls would die this turn, exile it instead. | Campbell White

Ray of Ruin | Sorcery | | Exile target creature, Vehicle, or nonbasic land. Scry 1. (Look at the top card of your library. You may put that card on the bottom.) | Sam Rowan

Terror Tide | Sorcery | | Fathomless descent — All creatures get -X/-X until end of turn, where X is the number of permanent cards in your graveyard. | Brock Grossman

Wail of the Forgotten | Sorcery | | Descend 8 — Choose one. If there are eight or more permanent cards in your graveyard as you cast this spell, choose one or more instead. • Return target nonland permanent to its owner's hand. • Target opponent discards a card. • Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard. | Ryan Valle

Molten Collapse | Sorcery | | Choose one. If you descended this turn, you may choose both instead. (You descended if a permanent card was put into your graveyard from anywhere.) • Destroy target creature or planeswalker. • Destroy target noncreature, nonland permanent with mana value 1 or less. | Kasia 'Kafis' Zielińska

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