{T}: Add one mana of any color in your commander's color identity.

Until end of turn, whenever a player taps a Swamp for mana, that player adds an additional {B}.

This artifact enters tapped. {T}: Add {B}.

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.) Whenever you tap a Swamp for mana, add an additional {B}.

Add {B}{B}{B}.

{2}, {T}, Sacrifice this artifact: Search your library for a land card, reveal it, put it into your hand, then shuffle.

{T}: Add one mana of any color that a land an opponent controls could produce.

Black spells you cast cost {1} less to cast.

({B/P} can be paid with either {B} or 2 life.) Lifelink For each {B} in a cost, you may pay 2 life rather than pay that mana. Whenever you cast a black spell, put a +1/+1 counter on K'rrik.

{2}, {T}: Add {B} for each Swamp you control.

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

Whenever you tap a Swamp for mana, add an additional {B}. {B}: This creature gets +1/+1 until end of turn.

{T}: Add {C}{C}.

At the beginning of your upkeep, the Ring tempts you. Whenever you choose a creature as your Ring-bearer, you may pay 2 life. If you do, draw a card.

At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its mana value.

At the beginning of your upkeep, you draw a card and you lose 1 life.

Exile target creature. Put X +1/+1 counters on a commander creature you control, where X is the power of the creature exiled this way.

Destroy all creatures. For each nontoken creature destroyed this way, you create a tapped Treasure token.

Consuming Corruption deals X damage to target creature or planeswalker and you gain X life, where X is the number of Swamps you control.

Choose one — • Destroy all Dragon creatures. • Destroy all non-Dragon creatures.

Destroy all creatures. They can't be regenerated.

Prevent all combat damage that would be dealt this turn.

Destroy all creatures. They can't be regenerated. Draw a card for each creature destroyed this way. Cycling {3}{B}{B} ({3}{B}{B}, Discard this card: Draw a card.) When you cycle this card, all creatures get -2/-2 until end of turn.

Target creature gets -1/-1 until end of turn for each Swamp you control.

Destroy all creatures you don't control and all planeswalkers you don't control.

When this creature enters, creatures your opponents control get -2/-2 until end of turn. Whenever a creature an opponent controls dies, that player loses 2 life.

Destroy all creatures, then return a creature card put into a graveyard this way to the battlefield under your control. It's a black Zombie in addition to its other colors and types. Exile Necromantic Selection.

Trample Whenever a source deals damage to this creature, that source's controller sacrifices that many permanents of their choice.

Deathtouch Whenever this creature enters or attacks, create two 2/2 black Zombie creature tokens.

Flying When this creature enters, search your library for a card, put it into your hand, then shuffle.

This land enters tapped. When this land enters, exile target player's graveyard. {T}: Add {B}.

{2}, {T}: Add {B} for each Swamp you control.

({T}: Add {B}.)

{T}: Add {C}. {2}, {T}: This land becomes a copy of target land, except it has this ability.

You may have this land enter tapped as a copy of any land on the battlefield.