The Lost Caverns of Ixalan

Aclazotz, Deepest Betrayal // Temple of the Dead | Legendary Creature // Land | Bat God // | Flying, lifelink Whenever Aclazotz attacks, each opponent discards a card. For each opponent who can't, you draw a card. Whenever an opponent discards a land card, create a 1/1 black Bat creature token with flying. When Aclazotz dies, return it to the battlefield tapped and transformed under its owner's control. // (Transforms from Aclazotz, Deepest Betrayal.) {T}: Add {B}. {2}{B}, {T}: Transform Temple of the Dead. Activate only if a player has one or fewer cards in hand and only as a sorcery. | Steve Prescott

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

Primordial Gnawer | Creature | Insect Horror | When Primordial Gnawer dies, discover 3. (Exile cards from the top of your library until you exile a nonland card with mana value 3 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.) | Maxime Minard

Queen's Bay Paladin | Creature | Vampire Knight | Whenever Queen's Bay Paladin enters the battlefield or attacks, return up to one target Vampire card from your graveyard to the battlefield with a finality counter on it. You lose life equal to its mana value. (If a creature with a finality counter on it would die, exile it instead.) | Slawomir Maniak

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

Uchbenbak, the Great Mistake | Legendary Creature | Skeleton Horror | Vigilance, menace Descend 8 — {4}{U}{B}: Return Uchbenbak, the Great Mistake from your graveyard to the battlefield with a finality counter on it. Activate only if there are eight or more permanent cards in your graveyard and only as a sorcery. (If a creature with a finality counter on it would die, exile it instead.) | Steven Belledin