Tomb of Annihilation

Trapped Entry — Each player loses 1 life. (? Veils of Fear or Oubliette)

Veils of Fear — Each player loses 2 life unless they discard a card. (? Sandfall Cell)

Sandfall Cell — Each player loses 2 life unless they sacrifice an artifact, a creature, or a land. (? Cradle of the Death God)

Oubliette — Discard a card and sacrifice an artifact, a creature, and a land. (?
Cradle of the Death God)

Cradle of the Death God — Create The Atropal, a legendary 4/4 black God Horror creature token with deathtouch.