Murder

Midnight Assassin

Flying
Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Village Rites

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.

Rot-Tide Gargantua

Exploit (When this creature enters, you may sacrifice a creature.)
When Rot-Tide Gargantua exploits a creature, each opponent sacrifices a creature of their choice.

Swamp

Eaten Alive

As an additional cost to cast this spell, sacrifice a creature or pay {3}{B}.
Exile target creature or planeswalker.

Corrupt Court Official

When Corrupt Court Official enters, target opponent discards a card.

Persistent Specimen

{2}{B}: Return Persistent Specimen from your graveyard to the battlefield tapped.

Doomed Dissenter

When Doomed Dissenter dies, create a 2/2 black Zombie creature token.

Lash of Malice

Target creature gets +2/-2 until end of turn.