Royal Assassin

Urborg

{T}: Add {B}.
{T}: Target creature loses first strike or swampwalk until end of turn.

Gloom

White spells cost {3} more to cast.
Activated abilities of white enchantments cost {3} more to activate.

Underworld Dreams

Whenever an opponent draws a card, this enchantment deals 1 damage to that player.

Paralyze

Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
At the beginning of the upkeep of enchanted creature's controller, that player may pay {4}. If the player does, untap the creature.

Hymn to Tourach

Target player discards two cards at random.

Mind Twist

Target player discards X cards at random.

Swamp

Maze of Ith

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

Order of the Ebon Hand

Protection from white
{B}: This creature gains first strike until end of turn.
{B}{B}: This creature gets +1/+0 until end of turn.

Nevinyrral's Disk

This artifact enters tapped.
{1}, {T}: Destroy all artifacts, creatures, and enchantments.

Sinkhole

Psychic Purge

Psychic Purge deals 1 damage to any target.
When a spell or ability an opponent controls causes you to discard this card, that player loses 5 life.

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.

Strip Mine

{T}: Add {C}.
{T}, Sacrifice this land: Destroy target land.

Su-Chi

When this creature dies, add {C}{C}{C}{C}.

Demonic Tutor

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

Sol Ring

Icy Manipulator

{1}, {T}: Tap target artifact, creature, or land.

Terror

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

Mishra's Factory

{T}: Add {C}.
{1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Dark Ritual

Hypnotic Specter

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

Sengir Vampire

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