Krovikan Sorcerer

{T}, Discard a nonblack card: Draw a card.
{T}, Discard a black card: Draw two cards, then discard one of them.

Counterspell

Soul Barrier

Whenever an opponent casts a creature spell, Soul Barrier deals 2 damage to that player unless they pay {2}.

Dark Banishing

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

Stench of Evil

Destroy all Plains. For each land destroyed this way, Stench of Evil deals 1 damage to that land's controller unless they pay {2}.

Phantasmal Fiend

{B}: Phantasmal Fiend gets +1/-1 until end of turn.
{1}{U}: Switch Phantasmal Fiend's power and toughness until end of turn.

Ray of Command

Untap target creature an opponent controls and gain control of it until end of turn. That creature gains haste until end of turn. When you lose control of the creature, tap it.

Each player loses a third of their life, then discards a third of the cards in their hand, then sacrifices a third of the creatures they control of their choice, then sacrifices a third of the lands they control of their choice. Round up each time.

Underground River

{T}: Add {C}.
{T}: Add {U} or {B}. Underground River deals 1 damage to you.

Icy Manipulator

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

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Mind Whip

Enchant creature
At the beginning of the upkeep of enchanted creature's controller, that player may pay {3}. If they don't, Mind Whip deals 2 damage to that player and you tap that creature.

Force Void

Counter target spell unless its controller pays {1}.
Draw a card at the beginning of the next turn's upkeep.

Soul Burn

Spend only black and/or red mana on X.
Soul Burn deals X damage to any target. You gain life equal to the damage dealt, but not more than the amount of {B} spent on X, the player's life total before the damage was dealt, the planeswalker's loyalty before the damage was dealt, or the creature's toughness.

Island

Icequake

Destroy target land. If that land was a snow land, Icequake deals 1 damage to that land's controller.

Zuran Spellcaster

{T}: Zuran Spellcaster deals 1 damage to any target.

Zuran Enchanter

{2}{B}, {T}: Target player discards a card. Activate only during your turn.

Essence Vortex

Destroy target creature unless its controller pays life equal to its toughness. A creature destroyed this way can't be regenerated.

Swamp

Flooded Woodlands

Green creatures can't attack unless their controller sacrifices a land of their choice for each green creature they control that's attacking. (This cost is paid as attackers are declared.)

Mind Warp

Look at target player's hand and choose X cards from it. That player discards those cards.

Elkin Bottle

{3}, {T}: Exile the top card of your library. Until the beginning of your next upkeep, you may play that card.

Hydroblast

Choose one —
• Counter target spell if it's red.
• Destroy target permanent if it's red.