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."

Defender {T}: Creatures you control gain haste until end of turn.

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

When this artifact enters or is put into a graveyard from the battlefield, draw a card.

Enchant creature or planeswalker you control When enchanted permanent dies or is put into exile, return that card to the battlefield under your control.

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

{T}: Target permanent becomes an artifact in addition to its other types until end of turn.

Enchant creature you control Enchanted creature has toxic 2. (Players dealt combat damage by it also get two poison counters.) When enchanted creature dies, return that card to the battlefield under your control.

Flying

Enchant creature Enchanted creature gets +2/+0 and has trample. When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

Reach {1}: Add one mana of any color. Activate only once each turn.

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

As an additional cost to cast this spell, discard a card or pay 3 life. Destroy target creature or planeswalker.

Destroy all creatures. Each player loses life equal to the number of creatures they controlled that were destroyed this way.

Deathtouch

Destroy target creature. You lose 2 life.

This spell costs {2} less to cast if you gained life this turn. Destroy target nonland permanent.

Destroy target artifact or creature. It can't be regenerated.

When this creature enters, you may destroy target artifact or enchantment.

Prevent all combat damage that would be dealt this turn. You gain 1 life for each attacking creature.

Each opponent sacrifices a creature or planeswalker with the greatest mana value among creatures and planeswalkers they control.

Kicker {1}{B} (You may pay an additional {1}{B} as you cast this spell.) Exile target artifact or enchantment. If this spell was kicked, exile target nonland permanent instead.

Whenever you draw your second card each turn, each opponent loses 2 life and you gain 2 life. When this creature dies, return another target creature card with mana value 3 or less from your graveyard to the battlefield.

Enchant creature Enchanted creature can attack as though it had haste. {0}: Untap enchanted creature. Activate only during your turn and only once each turn.

Whenever you draw your second card each turn, create a 2/2 green Cat creature token. {4}{G}{G}: Until end of turn, creatures you control have base power and toughness X/X, where X is the number of cards in your hand.

Fabricate 3 (When this creature enters, put three +1/+1 counters on it or create three 1/1 colorless Servo artifact creature tokens.) Whenever an artifact you control is put into a graveyard from the battlefield, target opponent loses life equal to this creature's power.

Enchant creature you control {0}: Untap enchanted creature. Activate only during your turn and only once each turn. Tap enchanted creature: Untap target artifact, creature, or land. Activate only if enchanted creature is white and untapped and only once each turn.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.) Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Whenever another creature dies, or a creature card is put into a graveyard from anywhere other than the battlefield, or a creature card leaves your graveyard, Syr Konrad deals 1 damage to each opponent. {1}{B}: Each player mills a card. (They each put the top card of their library into their graveyard.)

When Titania enters, return target land card from your graveyard to the battlefield. Whenever a land you control is put into a graveyard from the battlefield, create a 5/3 green Elemental creature token.

{T}: Add {C}. Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

{T}: Add {C}. {1}: This land becomes a 1/1 Blinkmoth artifact creature with flying until end of turn. It's still a land. {1}, {T}: Target Blinkmoth creature gets +1/+1 until end of turn.

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

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

This land enters tapped. Indestructible {T}: Add {B} or {G}.

Indestructible {T}: Add {C}.

{T}: Add {C}. When this land is put into a graveyard from the battlefield, create a 2/2 black Zombie creature token.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {G}.)

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {B} or {G}.

This land enters tapped. When this land enters, create a 0/1 green Plant creature token. {T}: Add {G}.

{T}: Add {C}. {T}: Add {B} or {G}. This land deals 1 damage to you.

{T}: Add {C}. {T}: Add one mana of any color. Activate only if this land entered this turn. {3}, {T}: Create a 1/1 colorless Phyrexian Mite artifact creature token with toxic 1 and "This token can't block." (Players dealt combat damage by it also get a poison counter.)

{T}: Add {C}. {1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. {T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

{T}: Add {C}. {2}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. {1}, {T}: Target attacking Assembly-Worker gets +2/+2 until end of turn.

{T}: Add {G}. {G}, {T}: Target legendary creature gets +1/+1 until end of turn.

This land enters tapped. {T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

This land enters tapped. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast artifact spells or activate abilities of artifacts. Modular 1

This land enters tapped. {T}: Add {B} or {G}. {2}{B}{G}: This land becomes a 4/4 black and green Horror creature until end of turn. It's still a land. Whenever this land attacks, create a Food token and exile up to one target card from a graveyard.

({T}: Add {B}.)

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

{T}: Add {G}.

This land enters tapped. {T}: Add {G}. {1}{G}: This land becomes a 3/3 green Ape creature with trample until end of turn. It's still a land. (It can deal excess combat damage to the player or planeswalker it's attacking.)

{T}: Add {B}.

Enchant land When this Aura enters, draw a card. Enchanted land has "{T}: Add one mana of any color."

{T}: Add {G}.

{T}: Add {B}.

{T}: Add {C}. {T}: Target nonland permanent becomes an artifact in addition to its other types until end of turn.

When this artifact enters 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.

Enchant creature Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice this Aura. When you sacrifice this Aura, search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

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

{T}: Add one mana of any color. {1}, {T}: Untap target legendary creature you control.

When this creature dies, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

{T}: Add X mana of any one color, where X is the number of enchantments you control.

{1}{G}, {T}, Return Shigeki to its owner's hand: Reveal the top four cards of your library. You may put a land card from among them onto the battlefield tapped. Put the rest into your graveyard. Channel — {X}{X}{G}{G}, Discard this card: Return X target nonlegendary cards from your graveyard to your hand.

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

When this creature dies, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Enchant creature Enchanted creature has shroud. (It can't be the target of spells or abilities.) When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

Target player shuffles their graveyard into their library. Prevent all combat damage that would be dealt this turn.

Deathtouch Whenever Erinis attacks, return target land card from your graveyard to the battlefield. Choose a Background (You can have a Background as a second commander.)

Enchant creature Sacrifice a Forest: Regenerate enchanted creature. When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

Menace (This creature can't be blocked except by two or more creatures.) When this creature enters, return target permanent card from your graveyard to your hand. If this creature would die, exile it instead.

Each player exiles all creature cards from their graveyard, then sacrifices all creatures they control, then puts all cards they exiled this way onto the battlefield.

{T}: Add one mana of any color. {T}: Target land you control becomes a 3/3 Elemental creature with haste until end of turn. It's still a land. Activate only as a sorcery.

Flash Enchant creature When enchanted creature dies, return that card to the battlefield under your control.

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

Put target land card from a graveyard onto the battlefield under your control.

Return all land cards from your graveyard to the battlefield tapped.

When this creature enters, surveil 2. Then for each card you put on top of your library, you draw a card and you lose 3 life. Descend 8 — Whenever you draw a card, if there are eight or more permanent cards in your graveyard, target opponent loses 1 life and you gain 1 life.

Deathtouch At the beginning of your upkeep, sacrifice The Gitrog Monster unless you sacrifice a land. You may play an additional land on each of your turns. Whenever one or more land cards are put into your graveyard from anywhere, draw a card.

When this enchantment enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") Whenever you sacrifice a Food, you may pay {1}. If you do, look at the top two cards of your library. You may reveal a permanent card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

When Aatchik enters, create a 1/1 green Insect creature token for each artifact and/or creature card in your graveyard. Whenever another Insect you control dies, put a +1/+1 counter on Aatchik. Each opponent loses 1 life.

{T}: Add one mana of any color in your commander's color identity. Sacrifice this artifact: Draw a card.

Add {B}{B}{B}.

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

Roll two d10 and choose one result. Return a creature card from your graveyard to the battlefield with a number of +1/+1 counters on it equal to that result. Then each opponent loses X life and you gain X life, where X is the other result.

When this creature enters, you may destroy target artifact. Artifacts your opponents control enter tapped.

Each player sacrifices six creatures of their choice. You create six tapped 2/2 black Zombie creature tokens.

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

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

{T}: Add {C}. {T}: Add {B} or {G}. This artifact deals 1 damage to you.

If a player would begin an extra turn, that player skips that turn instead. If Ugin's Nexus would be put into a graveyard from the battlefield, instead exile it and take an extra turn after this one.

Enchant creature When enchanted creature dies, return that card to the battlefield under your control.

Enchant creature When enchanted creature dies, return that card to the battlefield under your control with a +1/+1 counter on it.

{2}, {T}, Sacrifice this artifact: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.