Glimmer Hoarder

Survival — At the beginning of your second main phase, if Glimmer Hoarder is tapped, you lose 1 life and draft a card from Glimmer Hoarder's spellbook. That card perpetually becomes an enchantment in addition to its other types.

Alchemy: Duskmourn

Adapted to feed on dead flesh, it's not averse to making its own when no corpses are available.

Balemurk Leech

Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, each opponent loses 1 life.

Harpies are among the most detested creatures in all of Theros... and they thoroughly deserve it.

Mindwrack Harpy

Flying
At the beginning of combat on your turn, each player mills three cards.

Starving Revenant

When Starving Revenant enters the battlefield, surveil 2. Then for each card you put on top of your library, you draw a card and you lose 3 life.
Descend 8 — Whenever you draw a card, if there are eight or more permanent cards in your graveyard, target opponent loses 1 life and you gain 1 life.

When this creature enters, surveil 2. Then for each card you put on top of your library, you draw a card and you lose 3 life.
Descend 8 — Whenever you draw a card, if there are eight or more permanent cards in your graveyard, target opponent loses 1 life and you gain 1 life.

Defiler of Flesh

Menace
As an additional cost to cast black permanent spells, you may pay 2 life. Those spells cost {B} less to cast if you paid life this way. This effect reduces only the amount of black mana you pay.
Whenever you cast a black permanent spell, target creature you control gets +1/+1 and gains menace until end of turn.

"If you wish for blessings, mortal, ask your demon masters. We've given enough to your kind."

Angel of Suffering

Flying
If damage would be dealt to you, prevent that damage and mill twice that many cards.

Gravebreaker Lamia

Lifelink
When Gravebreaker Lamia enters the battlefield, search your library for a card, put it into your graveyard, then shuffle your library.
Spells you cast from your graveyard cost {1} less to cast.

Lifelink
When this creature enters, search your library for a card, put it into your graveyard, then shuffle.
Spells you cast from your graveyard cost {1} less to cast.

Chitinous Crawler

At the beginning of combat on your turn, choose target creature card in your graveyard. Conjure a duplicate of it into your graveyard.
Descend 8 — Exile a permanent card from your graveyard: You may play it. Activate only as a sorcery and only if there are eight or more permanent cards in your graveyard.

Puppet Raiser

At the beginning of your end step, exile up to one target creature card from your graveyard. If you do, seek a creature card with mana value equal to the mana value of that card plus one. That card perpetually gains menace.