The Lost Caverns of Ixalan

Souls of the Lost | Creature | Spirit | As an additional cost to cast this spell, discard a card or sacrifice a permanent. Fathomless descent — Souls of the Lost's power is equal to the number of permanent cards in your graveyard and its toughness is equal to that number plus 1. | Nils Hamm

Tarrian's Journal // The Tomb of Aclazotz | Legendary Artifact // Legendary Land | // Cave | {T}, Sacrifice another artifact or creature: Draw a card. Activate only as a sorcery. {2}, {T}, Discard your hand: Transform Tarrian's Journal. // (Transforms from Tarrian's Journal.) {T}: Add {B}. {T}: You may cast a creature spell from your graveyard this turn. If you do, it enters with a finality counter on it and is a Vampire in addition to its other types. (If a creature with a finality counter on it would die, exile it instead.) | Randy Gallegos

Amalia Benavides Aguirre | Legendary Creature | Vampire Scout | Ward—Pay 3 life. Whenever you gain life, Amalia Benavides Aguirre explores. Then, destroy all other creatures if its power is exactly 20. (To have this creature explore, 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.) | Alix Branwyn

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