The Great Machine

{T}: Add {C}.

{1}{U}, {T}: Put target artifact card from your graveyard on top of your library.

Sacrifice a creature: Add {C}{C}.

This artifact doesn't untap during your untap step.

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

{3}: Untap this artifact.

{T}, Sacrifice a creature: This artifact deals 1 damage to any target.

Whenever a creature enters, you may untap this artifact.

Trample, infect, indestructible

If Blightsteel Colossus would be put into a graveyard from anywhere, reveal Blightsteel Colossus and shuffle it into its owner's library instead.

({T}: Add {B} or {R}.)

As this land enters, you may pay 2 life. If you don't, it enters tapped.

({T}: Add {B} or {R}.)

This land enters tapped.

Cycling {2} ({2}, Discard this card: Draw a card.)

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Lands you control have "{T}: Add one mana of any color."

{T}: Add one mana of any color.

Whenever this land becomes tapped, it deals 1 damage to you.

{T}: Add one mana of any color.

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

[+2]: Discard up to two cards, then draw that many cards.

[−2]: Sacrifice an artifact. If you do, return target artifact card from your graveyard to the battlefield.

[−10]: You get an emblem with "Whenever an artifact is put into your graveyard from the battlefield, return that card to the battlefield at the beginning of the next end step."

Daretti, Scrap Savant can be your commander.

Indestructible

{T}: Add {C}.

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.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

Look at the top seven cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

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

This land enters tapped unless you control a Swamp or a Mountain.

{T}: Add {B} or {R}.

Whenever this creature or another artifact creature dies, you may untap target artifact.

This land enters tapped unless you control an Island or a Swamp.

{T}: Add {U} or {B}.

Imprint — When this creature enters, you may exile target nontoken creature.

As long as a card exiled with this creature is a creature card, this creature has the power, toughness, and creature types of the last creature card exiled with it. It's still a Shapeshifter.

Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.

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

{1}{B}, {T}, Sacrifice this artifact: Destroy target nonblack creature.

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

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

{2}{R}, {T}: Create a token that's a copy of target creature card in your graveyard, except it's an artifact in addition to its other types. It gains haste. Sacrifice it at the beginning of the next end step.

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

({T}: Add {U} or {B}.)

This land enters tapped.

Cycling {2} ({2}, Discard this card: Draw a card.)

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

{T}: Choose target artifact a player controls and target artifact card in that player's graveyard. If both targets are still legal as this ability resolves, that player simultaneously sacrifices the artifact and returns the artifact card to the battlefield.

{T}: Add {R}.

Flying, trample

Whenever this creature deals combat damage to a player, gain control of all artifacts that player controls.

At the beginning of your upkeep, if you control twenty or more artifacts, you win the game.

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

At the beginning of your upkeep, if you control three or more artifacts, you gain 1 life.

{T}: Add {C}.

{4}, {T}, Sacrifice Inventors' Fair: Search your library for an artifact card, reveal it, put it into your hand, then shuffle. Activate only if you control three or more artifacts.

({T}: Add {U}.)

{1}, {T}: Add {U}{R}.

Flying

When this creature dies, return another target artifact card from your graveyard to your hand.

[+1]: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it.

[−1]: Put a card you own with a silver counter on it from exile into your hand.

[−2]: Create a 0/0 colorless Construct artifact creature token with "This token gets +1/+1 for each artifact you control."

Sacrifice an artifact: Add {C}{C}.

{T}, Sacrifice three artifacts: Search your library for an artifact card, put it onto the battlefield, then shuffle.

{U}, {T}, Return an artifact you control to its owner's hand: You may put an artifact card from your hand onto the battlefield.

{1}{U}{U}: Target permanent becomes an artifact in addition to its other types. (This effect lasts indefinitely.)

{3}{U}: Gain control of target artifact. (This effect lasts indefinitely.)

{T}: Reveal any number of artifact cards in your hand. Add {C}{C} for each card revealed this way.

({T}: Add {R}.)

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.

When this creature dies, return another target artifact card from your graveyard to your hand.

This artifact enters tapped.

{1}, {T}: Destroy all artifacts, creatures, and enchantments.

Menace

When this creature enters, you may destroy another target creature. If a creature is destroyed this way, you gain life equal to its toughness.

Artifacts you control have hexproof. (They can't be the targets of spells or abilities your opponents control.)

At the beginning of your upkeep, if you control the artifact with the greatest mana value or tied for the greatest mana value, draw a card.

({U/P} can be paid with either {U} or 2 life.)

You may have this creature enter as a copy of any artifact or creature on the battlefield, except it's an artifact in addition to its other types.

Whenever a nontoken artifact is put into your graveyard from the battlefield, return that card to your hand unless target opponent has this enchantment deal 3 damage to them.

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

{T}: Add one mana of any type that a land you control could produce.

Whenever a creature an opponent controls dies, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

At the beginning of your upkeep, if you control ten or more Treasures, you win the game.

Whenever you activate an ability, if it isn't a mana ability, you may pay {2}. If you do, copy that ability. You may choose new targets for the copy.

Whenever you cast a noncreature spell, create a 1/1 colorless Servo artifact creature token.

[−2]: Target artifact you control becomes a copy of another target artifact or creature you control until end of turn, except it's an artifact in addition to its other types.

[+1]: Create a 1/1 colorless Servo artifact creature token.

[+1]: The next spell you cast this turn has affinity for artifacts. (It costs {1} less to cast for each artifact you control as you cast it.)

[−7]: For each artifact you control, create a token that's a copy of it. Those tokens gain haste. Exile those tokens at the beginning of the next end step.

Saheeli, the Gifted can be your commander.

Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.

{1}{U}, Sacrifice two artifacts: Draw a card.

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

Whenever this creature dies or another artifact you control is put into a graveyard from the battlefield, return to your hand target artifact card in your graveyard with lesser mana value.

{T}: Add {U}.

{1}: Look at the top three cards of your library, then put them back in any order.

{T}: Draw a card, then put this artifact on top of its owner's library.

{T}: Add {C}.

{T}: Add {U} or {R}. This land deals 1 damage to you.

Deathtouch

Whenever Silas Renn deals combat damage to a player, choose target artifact card in your graveyard. You may cast that card this turn.

Partner (You can have two commanders if both have partner.)

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

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

When this creature dies, you may draw a card.

Flying

When this creature enters, you may search your library for an artifact creature card, reveal it, put it into your hand. then shuffle.

When this artifact enters, destroy target permanent.

When this artifact is put into a graveyard from the battlefield, return it to its owner's hand.

({T}: Add {U} or {R}.)

As this land enters, you may pay 2 life. If you don't, it enters tapped.

This land enters tapped unless you control an Island or a Mountain.

{T}: Add {U} or {R}.

{T}: Add {C}.

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

({T}: Add {B}.)

Creature and planeswalker spells you cast have affinity for artifacts. (They cost {1} less to cast for each artifact you control.)

[+2]: Tezzeret deals X damage to each opponent, where X is the number of artifacts you control. You gain X life.

[−3]: Return target artifact card from your graveyard to your hand.

[−8]: Exile the top ten cards of your library. Put all artifact cards from among them onto the battlefield.

Flying

At the beginning of your upkeep, if you control no Thopters other than this creature, return this creature to its owner's hand and create five 1/1 colorless Thopter artifact creature tokens with flying.

At the beginning of your upkeep, if you control an artifact, create a 1/1 colorless Thopter artifact creature token with flying.

Whenever one or more artifact creatures you control deal combat damage to a player, draw a card.

{T}, Sacrifice five artifacts: Take an extra turn after this one.

Repeat the following process X times. Each opponent loses 3 life unless that player sacrifices a nonland permanent of their choice or discards a card.

As an additional cost to cast this spell, pay X life.

All creatures get -X/-X until end of turn.

{1}, {T}, Discard a card: You gain 4 life.

{1}, {T}, Pay 1 life: Create a 0/1 white Goat creature token.

{1}, {T}, Sacrifice a creature: Return target artifact card from your graveyard to your hand.

{1}, {T}, Sacrifice an artifact: Draw a card.

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)

Draw three cards.

When this creature enters, you may search your library for an artifact card with mana value 3, reveal it, put it into your hand, then shuffle.

{T}: Add {C}.

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

{T}: Add {B}.

Whenever you cast your first spell each turn, choose an opponent at random. Vial Smasher deals damage equal to that spell's mana value to that player or a planeswalker that player controls.

Partner (You can have two commanders if both have partner.)

({T}: Add {U} or {B}.)

As this land enters, you may pay 2 life. If you don't, it enters tapped.

Deathtouch, lifelink

When this creature dies, create a 3/3 colorless Phyrexian Wurm artifact creature token with deathtouch and a 3/3 colorless Phyrexian Wurm artifact creature token with lifelink.