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."

Lifelink

{1}, Sacrifice Alseid of Life's Bounty: Target creature or enchantment you control gains protection from the color of your choice until end of turn.

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

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

As an additional cost to cast this spell, sacrifice two creatures.

Draw three cards.

Kicker {B} (You may pay an additional {B} as you cast this spell.)

When Benalish Sleeper enters the battlefield, if it was kicked, each player sacrifices a creature.

Sacrifice Benevolent Bodyguard: Target creature you control gains protection from the color of your choice until end of turn.

Attacking Pests you control get +1/+0 and have menace.

Whenever a nontoken creature you control dies, create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."

Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.

Vigilance

{T}, Sacrifice Bounty Agent: Destroy target legendary permanent that's an artifact, creature, or enchantment.

At the beginning of your end step, you may sacrifice an artifact, creature, enchantment, land, or planeswalker. If you do, each opponent may sacrifice a permanent that shares a card type with it. For each opponent who doesn't, that player loses 2 life and you draw a card.

{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Flying

Whenever Butcher of Malakir or another creature you control dies, each opponent sacrifices a creature.

Choose a number between 0 and 13. Each player sacrifices that many creatures.

Carrion Feeder can't block.

Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

Flash

{1}, Sacrifice Cathar Commando: Destroy target artifact or enchantment.

Charcoal Diamond enters the battlefield tapped.

{T}: Add {B}.

Sacrifice Children of Korlis: You gain life equal to the life you've lost this turn. (Damage causes loss of life.)

Whenever Cruel Celebrant or another creature or planeswalker you control dies, each opponent loses 1 life and you gain 1 life.

Add {B}{B}{B}.

As Dauntless Bodyguard enters the battlefield, choose another creature you control.

Sacrifice Dauntless Bodyguard: The chosen creature gains indestructible until end of turn.

When Demon's Disciple enters the battlefield, each player sacrifices a creature or planeswalker.

{1}{B}, Sacrifice an artifact or creature: Draw a card.

{B}, {T}, Sacrifice Doomed Necromancer: Return target creature card from your graveyard to the battlefield.

When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.

Flying

At the beginning of your end step, sacrifice a non-Demon creature. If you do, create a token that's a copy of Dreadfeast Demon.

Deathtouch

Whenever another creature enters the battlefield under your control, you gain 1 life.

Whenever another creature you control dies, each opponent loses 1 life.

Flying

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

Whenever a nontoken creature is put into your graveyard from the battlefield, create a 1/1 white Spirit creature token with flying.

Flying, lifelink

Whenever you cast your second spell each turn, look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.

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

Whenever you sacrifice another creature, you gain 1 life and scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

{1}, Sacrifice another creature: Fleshtaker gets +2/+2 until end of turn.

Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Whenever another nontoken creature you control dies, draw a card.

Deathtouch

Whenever another nontoken creature dies, you may draw a card.

Sacrifice Kami of False Hope: Prevent all combat damage that would be dealt this turn.

Flying, protection from black

Echo {3}{W}{W} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Karmic Guide enters the battlefield, return target creature card from your graveyard to the battlefield.

First strike

When Knight of the White Orchid enters the battlefield, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield, then shuffle.

Flying, lifelink

Whenever another nontoken creature you control dies, return that card to its owner's hand at the beginning of the next end step.

If a creature an opponent controls would die, exile it instead.

Whenever another creature enters the battlefield under your control, you gain 1 life.

Disturb {1}{W} (You may cast this card from your graveyard transformed for its disturb cost.)

Flying

Whenever another creature you control leaves the battlefield, you gain 1 life.

If Luminous Phantom would be put into a graveyard from anywhere, exile it instead.

When Merciless Executioner enters the battlefield, each player sacrifices a creature.

Enchant creature

Enchanted creature has "Whenever another creature dies, put a +1/+1 counter on this creature."

When enchanted creature dies, look at the top X cards of your library, where X is its power. Put one of those cards into your hand and the rest on the bottom of your library in a random order.

When Novice Occultist dies, you draw a card and you lose 1 life.

Whenever Odric's Outrider or another creature you control dies, put a +1/+1 counter on target creature you control.

Destroy all nonland permanents.

Ondu Skyruins enters the battlefield tapped.

{T}: Add {W}.

Whenever a nontoken creature you control dies, create a 2/2 black Zombie creature token.

{1}, {T}: Add {W}{B}.

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

As an additional cost to cast this spell, you may sacrifice one or more creatures. When you do, copy this spell for each creature sacrificed this way.

You draw a card and you lose 1 life.

{T}, Pay 3 life, Sacrifice Priest of Fell Rites: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Unearth {3}{W}{B} ({3}{W}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

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.

Sacrifice Selfless Savior: Another target creature you control gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Flying

Sacrifice Selfless Spirit: Creatures you control gain indestructible until end of turn.

When Shambling Ghast dies, choose one --

• Brave the Stench -- Target creature an opponent controls gets -1/-1 until end of turn.

• Search the Body -- Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

When Shriekmaw enters the battlefield, destroy target nonartifact, nonblack creature.

Evoke {1}{B} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

Target player draws two cards and loses 2 life.

Each player chooses a creature or planeswalker they control, then sacrifices the rest. Players can't cast creature or planeswalker spells until the end of your next turn.

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

When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

When Solemn Simulacrum dies, you may draw a card.

Whenever a nontoken creature enters the battlefield under your control, you may pay {W}. If you do, create a 1/1 white Spirit creature token with flying.

{1}{W}, Sacrifice a Spirit: Target non-Spirit creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

When Spirited Companion enters the battlefield, draw a card.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Each player sacrifices two creatures.

Foretell {2}{B}{B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

If a creature dying causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

Creature tokens you control have vigilance and lifelink.

Whenever another creature you control dies, put a +1/+1 counter on Unruly Mob.

This spell costs {1} less to cast for each creature on the battlefield.

Destroy all creatures.

Choose two target creature cards in your graveyard. Sacrifice a creature. If you do, return the chosen cards to the battlefield tapped.

As an additional cost to cast this spell, sacrifice a creature.

Draw two cards.

Whenever another creature you control dies, Vindictive Vampire deals 1 damage to each opponent and you gain 1 life.

Whenever Zulaport Cutthroat or another creature you control dies, each opponent loses 1 life and you gain 1 life.