Elderfang Disciple

When this creature enters, each opponent discards a card.

Burglar Rat

Plaguecrafter

When this creature enters, each player sacrifices a creature or planeswalker of their choice. Each player who can't discards a card.

Vicious Rumors

Vicious Rumors deals 1 damage to each opponent. Each opponent discards a card, then mills a card. You gain 1 life.

Sign in Blood

Target player draws two cards and loses 2 life.

Mountain

Fell Specter

Flying
When this creature enters, target opponent discards a card.
Whenever an opponent discards a card, that player loses 2 life.

Swamp

Raiders' Wake

Whenever an opponent discards a card, that player loses 2 life.
Raid — At the beginning of your end step, if you attacked this turn, target opponent discards a card.

Smoldering Marsh

({T}: Add {B} or {R}.)
This land enters tapped unless you control two or more basic lands.

Hecteyes

Bedevil

Destroy target artifact, creature, or planeswalker.

Skull Rend

Skull Rend deals 2 damage to each opponent. Those players each discard two cards at random.