Mind Twist

Target player discards X cards at random.

Sol Ring

Swamp

Black Lotus

{T}, Sacrifice Black Lotus: Add three mana of any one color.

Demonic Tutor

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

Pestilence

At the beginning of the end step, if no creatures are on the battlefield, sacrifice Pestilence.
{B}: Pestilence deals 1 damage to each creature and each player.

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.

Hypnotic Specter

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

Terror

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

Frozen Shade

{B}: Frozen Shade gets +1/+1 until end of turn.

Dark Ritual

Drain Life

Spend only black mana on X.
Drain Life deals X damage to any target. You gain life equal to the damage dealt, but not more life than the player's life total before the damage was dealt, the planeswalker's loyalty before the damage was dealt, or the creature's toughness.