Decompose

Exile up to three target cards from a single graveyard.

Diabolic Tutor

Search your library for a card, put that card into your hand, then shuffle.

Cantivore

Vigilance
Cantivore's power and toughness are each equal to the number of enchantment cards in all graveyards.

Dirty Wererat

{B}, Discard a card: Regenerate this creature.
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and can't block.

Dusk Imp

Entomb

Search your library for a card, put that card into your graveyard, then shuffle.

Execute

Destroy target white creature. It can't be regenerated.
Draw a card.

Face of Fear

{2}{B}, Discard a card: This creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)

Famished Ghoul

{1}{B}, Sacrifice this creature: Exile up to two target cards from a single graveyard.

Filthy Cur

Whenever this creature is dealt damage, you lose that much life.

Fledgling Imp

{B}, Discard a card: This creature gains flying until end of turn.

Frightcrawler

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +2/+2 and can't block.

Ghastly Demise

Destroy target nonblack creature if its toughness is less than or equal to the number of cards in your graveyard.

Cease-Fire

Target player can't cast creature spells this turn.
Draw a card.

Gravedigger

When this creature enters, you may return target creature card from your graveyard to your hand.

Gravestorm

At the beginning of your upkeep, target opponent may exile a card from their graveyard. If that player doesn't, you may draw a card.

Odyssey