Tainted Peak

{T}: Add {C}.
{T}: Add {B} or {R}. Activate only if you control a Swamp.

Tainted Wood

{T}: Add {C}.
{T}: Add {B} or {G}. Activate only if you control a Swamp.

Spirit Flare

Tap target untapped creature you control. If you do, it deals damage equal to its power to target attacking or blocking creature an opponent controls.
Flashback—{1}{W}, Pay 3 life. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Stern Judge

{T}: Each player loses 1 life for each Swamp they control.

Strength of Isolation

Enchant creature
Enchanted creature gets +1/+2 and has protection from black.
Madness {W} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Teroh's Faithful

When this creature enters, you gain 4 life.

Teroh's Vanguard

Flash
Threshold — As long as there are seven or more cards in your graveyard, this creature has "When this creature enters, creatures you control gain protection from black until end of turn."

Aven Trooper

Flying
{2}{W}, Discard a card: This creature gets +1/+2 until end of turn.

Transcendence

You don't lose the game for having 0 or less life.
When you have 20 or more life, you lose the game.
Whenever you lose life, you gain 2 life for each 1 life you lost. (Damage dealt to you causes you to lose life.)

Vengeful Dreams

As an additional cost to cast this spell, discard X cards.
Exile X target attacking creatures.

Alter Reality

Change the text of target spell or permanent by replacing all instances of one color word with another. (This effect lasts indefinitely.)
Flashback {1}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Ambassador Laquatus

Aquamoeba

Discard a card: Switch this creature's power and toughness until end of turn.

Balshan Collaborator

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

Breakthrough

Draw four cards, then choose X cards in your hand and discard the rest.

Cephalid Aristocrat

Whenever this creature becomes the target of a spell or ability, mill two cards.

Torment