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

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

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