Commander creatures you own have "Whenever an artifact or creature you control is put into a graveyard from the battlefield, each opponent loses 1 life."

Bojuka Bog enters the battlefield tapped. When Bojuka Bog enters the battlefield, exile target player's graveyard. {T}: Add {B}.

Mortuary Mire enters the battlefield tapped. When Mortuary Mire enters the battlefield, you may put target creature card from your graveyard on top of your library. {T}: Add {B}.

({T}: Add {B}.)

({T}: Add {B}.)

The Dross Pits enters the battlefield tapped. {T}: Add {B}. {1}{B}, {T}, Sacrifice The Dross Pits: Draw a card.

{T}: Add {C}. {3}, {T}: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

{T}: Add {B}.

When Blood Fountain enters the battlefield, create a Blood token. (It's an artifact with "{1}, {T}, Discard a card, Sacrifice this artifact: Draw a card.") {3}{B}, {T}, Sacrifice Blood Fountain: Return up to two target creature cards from your graveyard to your hand.

When Filigree Familiar enters the battlefield, you gain 2 life. When Filigree Familiar dies, draw a card.

Defender When Gleaming Barrier dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

When Mycosynth Wellspring enters the battlefield or is put into a graveyard from the battlefield, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

When Myr Sire dies, create a 1/1 colorless Phyrexian Myr artifact creature token.

When Nimblewright Schematic enters the battlefield or is put into a graveyard from the battlefield, create a 1/1 colorless Construct artifact creature token.

When Perilous Myr dies, it deals 2 damage to any target.

When Prized Statue enters the battlefield or is put into a graveyard from the battlefield, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Target player draws two cards and loses 2 life. Adamant — If at least three black mana was spent to cast this spell, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

When Ichor Wellspring enters the battlefield or is put into a graveyard from the battlefield, draw a card.

You draw two cards and you lose 2 life.

As an additional cost to cast this spell, sacrifice an artifact or creature. You gain life equal to the sacrificed permanent's mana value. Draw two cards.

Target player draws two cards and loses 2 life.

When Carrier Thrall dies, create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}."

When Doomed Dissenter dies, create a 2/2 black Zombie creature token.

{2}{B}: Return Persistent Specimen from your graveyard to the battlefield tapped.

{2}{B}: Return Sanitarium Skeleton from your graveyard to your hand.

When Serrated Scorpion dies, it deals 2 damage to each opponent and you gain 2 life.

When Sultai Emissary dies, manifest the top card of your library. (Put that card onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

{1}, Sacrifice a creature: Each opponent loses 1 life and you gain 1 life.

When Cauldron Familiar enters the battlefield, each opponent loses 1 life and you gain 1 life. Sacrifice a Food: Return Cauldron Familiar from your graveyard to the battlefield.

Whenever another creature dies, you may gain 1 life.

Whenever an artifact is put into a graveyard from the battlefield, you may have target opponent lose 1 life.

Flying Whenever Falkenrath Noble or another creature dies, target player loses 1 life and you gain 1 life.

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

Charcoal Diamond enters the battlefield tapped. {T}: Add {B}.

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

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

{T}: Add {B}.

{T}: Add {C}. {1}, {T}, Sacrifice Mind Stone: Draw a card.

{2}, {T}, Sacrifice Navigation Orb: Search your library for up to two basic land cards and/or Gate cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Flying {T}: Add one mana of any color.

{1}, Sacrifice Traveler's Amulet: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Put any number of target creature cards from your graveyard on top of your library. Draw a card at the beginning of the next turn's upkeep.

Flying When Cadaver Imp enters the battlefield, you may return target creature card from your graveyard to your hand.

When Dutiful Attendant dies, return another target creature card from your graveyard to your hand.

Choose one or both — • Return target artifact card from your graveyard to your hand. • Return target creature card from your graveyard to your hand.

When Myr Retriever dies, return another target artifact card from your graveyard to your hand.

Flash When Omen of the Dead enters the battlefield, return target creature card from your graveyard to your hand. {2}{B}, Sacrifice Omen of the Dead: Scry 2.

Return target creature card from your graveyard to your hand. If you control an artifact, draw a card.

Creatures target player controls get -2/-2 until end of turn.

Destroy target creature. Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

Animate Chains — When Chain Devil enters the battlefield, each player sacrifices a nontoken creature.

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

{1}{B}, {T}, Sacrifice Executioner's Capsule: Destroy target nonblack creature.

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

When Fleshbag Marauder enters the battlefield, each player sacrifices a creature.

Destroy target creature.

{T}, Sacrifice Nihil Spellbomb: Exile target player's graveyard. When Nihil Spellbomb is put into a graveyard from the battlefield, you may pay {B}. If you do, draw a card.

This spell costs {1} less to cast for each creature card in your graveyard. Exile target creature or planeswalker.

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

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

Add {B}{B}{B}.