Mirko Vosk, Mind Drinker

Flying
Whenever Mirko Vosk deals combat damage to a player, that player reveals cards from the top of their library until they reveal four land cards, then puts those cards into their graveyard.

Soul Scourge

Flying
When this creature enters, target player loses 3 life.
When this creature leaves the battlefield, that player gains 3 life.

Nuisance Engine

{2}, {T}: Create a 0/1 colorless Pest artifact creature token.

Okiba-Gang Shinobi

Ninjutsu {3}{B} ({3}{B}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever this creature deals combat damage to a player, that player discards two cards.

Keening Stone

{5}, {T}: Target player mills X cards, where X is the number of cards in that player's graveyard.

Evanescent Intellect

Enchant creature
Enchanted creature has "{1}{U}, {T}: Target player mills three cards."

Roaming Throne

Ward {2}
As this creature enters, choose a creature type.
This creature is the chosen type in addition to its other types.
If a triggered ability of another creature you control of the chosen type triggers, it triggers an additional time.

Access Denied

Counter target spell. Create X 1/1 colorless Thopter artifact creature tokens with flying, where X is that spell's mana value.

Jace, Memory Adept

+1: Draw a card. Target player mills a card.
0: Target player mills ten cards.
−7: Any number of target players each draw twenty cards.

Dross Golem

Affinity for Swamps (This spell costs {1} less to cast for each Swamp you control.)
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Dark Banishing

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

Millstone

Cephalid Broker

{T}: Target player draws two cards, then discards two cards.

Oona, Queen of the Fae

Flying
{X}{U/B}: Choose a color. Target opponent exiles the top X cards of their library. For each card of the chosen color exiled this way, create a 1/1 blue and black Faerie Rogue creature token with flying.

Siren of the Silent Song

Flying
Inspired — Whenever this creature becomes untapped, each opponent discards a card, then each opponent mills a card.

Mind Sludge

Target player discards a card for each Swamp you control.

Coercion

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

Shadow Puppeteers

Flying, ward {2}
When this creature enters, create two 1/1 black Faerie Rogue creature tokens with flying.
Whenever a creature you control with flying attacks, you may have it become a red Dragon with base power and toughness 4/4 in addition to its other colors and types until end of turn.

Liliana Vess

+1: Target player discards a card.
−2: Search your library for a card, then shuffle and put that card on top.
−8: Put all creature cards from all graveyards onto the battlefield under your control.

Larceny

Whenever a creature you control deals combat damage to a player, that player discards a card.

Nantuko Shade

{B}: This creature gets +1/+1 until end of turn.

Megrim

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

Brainbite

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

Terror

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

Abyssal Specter

Flying
Whenever this creature deals damage to a player, that player discards a card.

Traumatize

Target player mills half their library, rounded down.

Sever Soul

Destroy target nonblack creature. It can't be regenerated. You gain life equal to its toughness.