Royal Assassin

Sengir Vampire

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by Sengir Vampire this turn dies, put a +1/+1 counter on Sengir Vampire.

Phyrexian Arena

At the beginning of your upkeep, you draw a card and you lose 1 life.

Uncle Istvan

Prevent all damage that would be dealt to Uncle Istvan by creatures.

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Ice Floe

You may choose not to untap Ice Floe during your untap step.
{T}: Tap target creature without flying that's attacking you. It doesn't untap during its controller's untap step for as long as Ice Floe remains tapped.

Swamp

Dark Ritual

Hymn to Tourach

Target player discards two cards at random.

Painful Memories

Look at target opponent's hand and choose a card from it. Put that card on top of that player's library.

Persecute

Choose a color. Target player reveals their hand and discards all cards of that color.

Will-o'-the-Wisp

Flying (This creature can't be blocked except by creatures with flying or reach.)
{B}: Regenerate Will-o'-the-Wisp. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Ostracize

Target opponent reveals their hand. You choose a creature card from it. That player discards that card.

Diabolic Edict

The Rack

As The Rack enters the battlefield, choose an opponent.
At the beginning of the chosen player's upkeep, The Rack deals X damage to that player, where X is 3 minus the number of cards in their hand.

Skittering Skirge

Flying
When you cast a creature spell, sacrifice Skittering Skirge.

Ravenous Rats

When Ravenous Rats enters the battlefield, target opponent discards a card.

Megrim

Whenever an opponent discards a card, Megrim deals 2 damage to that player.

Hypnotic Specter

Flying
Whenever Hypnotic Specter deals damage to an opponent, that player discards a card at random.

Blackmail

Target player reveals three cards from their hand and you choose one of them. That player discards that card.