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."

Other artifact creatures you control have haste.

Whenever one or more artifact creatures you control attack, Alibou, Ancient Witness deals X damage to any target and you scry X, where X is the number of tapped artifacts you control.

{T}: Add {W}.

Trample

Whenever another artifact enters the battlefield, put a +1/+1 counter on Arcbound Crusher.

Modular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

{T}, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

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

{T}: Add {C}.

{T}: Add {R} or {W}. Battlefield Forge deals 1 damage to you.

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

Blasphemous Act deals 13 damage to each creature.

{T}: Add {B}.

{T}: Add {R}.

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

As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

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.

{T}, Pay 1 life, Sacrifice Bloodstained Mire: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.

{T}: Add {W}.

{T}: Add {B}.

{T}: Add {C}.

{T}: Add {W} or {B}. Caves of Koilos deals 1 damage to you.

{1}, {T}, Sacrifice Chromatic Star: Add one mana of any color.

When Chromatic Star is put into a graveyard from the battlefield, draw a card.

Tap two untapped artifacts you control: Untap target artifact.

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

As you create your deck, circle two of the colors below.

Cryptic Spires enters the battlefield tapped.

{T}: Add one mana of either of the circled colors.

Destroy target creature. A creature destroyed this way can't be regenerated.

Overload {2}{W}{W} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

+1: Create a 1/1 colorless Construct artifact creature token with defender.

-1: You may sacrifice an artifact. If you do, destroy target artifact or creature.

-6: Choose target artifact card in a graveyard or artifact on the battlefield. Create three tokens that are copies of it.

+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.

Artifacts you control have indestructible. (Effects that say "destroy" don't destroy them. Artifact creatures with indestructible can't be destroyed by damage.)

If you control a commander, you may cast this spell without paying its mana cost.

You may choose new targets for target spell or ability.

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

Drossforge Bridge enters the battlefield tapped.

Indestructible

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

Flying

Untap all creatures you control during each other player's untap step.

Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is Esper Sentinel's power.

Whenever Fathom Fleet Swordjack attacks, it deals damage to the player or planeswalker it's attacking equal to the number of artifacts you control.

Encore {5}{R} ({5}{R}, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

{T}: Add {C}.

{W/B}, {T}: Add {W}{W}, {W}{B}, or {B}{B}.

If Gemstone Caverns is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand.

{T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.

Tap two untapped artifacts you control: Ghirapur Aether Grid deals 1 damage to any target.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Flying

Whenever another artifact enters the battlefield under your control, Glaze Fiend gets +2/+2 until end of turn.

{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 {W} or {B}.)

As Godless Shrine enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Goldmire Bridge enters the battlefield tapped.

Indestructible

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

{T}: Add {C}.

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

{T}: Add {R}.

{W}, {T}, Untap a tapped creature you control: Create a 1/1 green and white Citizen creature token.

{W}{W}, {T}, Untap two tapped creatures you control: Draw a card.

{W}{W}{W}{W}{W}, {T}, Untap fifteen tapped creatures you control: You win the game.

Haunted Ridge enters the battlefield tapped unless you control two or more other lands.

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

Flying, haste

{1}{R}: Hellkite Igniter gets +X/+0 until end of turn, where X is the number of artifacts you control.

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

{T}: Draw a card. Activate only if you created a token this turn.

{8}, {T}, Sacrifice Idol of Oblivion: Create a 10/10 colorless Eldrazi creature token.

{R}, Sacrifice Implement of Combustion: It deals 1 damage to target player or planeswalker.

When Implement of Combustion is put into a graveyard from the battlefield, draw a card.

{W}, Sacrifice Implement of Improvement: You gain 2 life.

When Implement of Improvement is put into a graveyard from the battlefield, draw a card.

Haste

{T}, Sacrifice an artifact creature: Create two Treasure tokens.

{T}, Sacrifice a noncreature artifact: Create two 1/1 colorless Construct artifact creature tokens.

Flying

When Junk Diver dies, return another target artifact card from your graveyard to your hand.

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

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

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

Prevent all combat damage that would be dealt to attacking artifact creatures you control.

Whenever one or more artifact creatures enter the battlefield under your control, draw a card. This ability triggers only once each turn.

{T}, Sacrifice Lotus Petal: Add one mana of any color.

Haste

Lieutenant -- At the beginning of combat on your turn, if you control your commander, create a 1/1 colorless Thopter artifact creature token with flying. That token gains haste until end of turn.

Luxury Suite enters the battlefield tapped unless you have two or more opponents.

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

{1}, {T}: Untap target creature that has an activated ability with {T} in its cost.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.

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

Fabricate 3 (When this creature enters the battlefield, 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 Marionette Master's power.

{T}, Pay 1 life, Sacrifice Marsh Flats: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.

Whenever a player sacrifices a permanent, Mayhem Devil deals 1 damage to any target.

{5}, Exile Mechtitan Core and four other artifact creatures and/or Vehicles you control: Create Mechtitan, a legendary 10/10 Construct artifact creature token with flying, vigilance, trample, lifelink, and haste that's all colors. When that token leaves the battlefield, return all cards exiled with Mechtitan Core except Mechtitan Core to the battlefield tapped under their owners' control.

Crew 2

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

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

Whenever a token you control leaves the battlefield, each opponent loses 1 life and you gain 1 life.

{T}: Add {R}.

{T}: Add {W}.

Whenever a creature deals damage to you, destroy it.

Nomad Outpost enters the battlefield tapped.

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

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)

Destroy all nonartifact creatures.

{T}: Add one mana of any color.

{1}, {T}: Untap target legendary creature you control.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I -- Put a +1/+1 counter on up to one target creature. That creature becomes an artifact in addition to its other types.

II -- Destroy all nonartifact creatures.

III -- Exile all opponents' graveyards.

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

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.")

Whenever an artifact enters the battlefield under your control, Reckless Fireweaver deals 1 damage to each opponent.

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

{T}: Add {C}.

{R/W}, {T}: Add {R}{R}, {R}{W}, or {W}{W}.

Destroy all nonland permanents your opponents control.

Rustvale Bridge enters the battlefield tapped.

Indestructible

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

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

As Sacred Foundry enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Improvise (Each artifact you tap after you're done activating mana abilities pays for {1}.)

Reveal the top X cards of your library. You may put any number of artifact cards with mana value X or less from among them onto the battlefield. Then put all cards revealed this way that weren't put onto the battlefield into your graveyard.

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

Savai Triome enters the battlefield tapped.

Cycling {3} ({3}, Discard this card: Draw a card.)

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

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

{T}: Draw a card, then put Sensei's Divining Top on top of its owner's library.

Shattered Sanctum enters the battlefield tapped unless you control two or more other lands.

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

Flying

Whenever Smuggler's Copter attacks or blocks, you may draw a card. If you do, discard a card.

Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

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

Spectator Seating enters the battlefield tapped unless you have two or more opponents.

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

{T}: Add {C}.

{T}, Pay 1 life: Add one mana of any color. Activate only if you control an artifact.

{T}: Add {C}.

{T}: Add {B} or {R}. Sulfurous Springs deals 1 damage to you.

Sundown Pass enters the battlefield tapped unless you control two or more other lands.

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

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

Terrarion enters the battlefield tapped.

{2}, {T}, Sacrifice Terrarion: Add two mana in any combination of colors.

When Terrarion is put into a graveyard from the battlefield, draw a card.

Equipped creature has "{2}, {T}: This creature deals 1 damage to any target" and "Whenever a creature dies, untap this creature."

Whenever a Shaman creature enters the battlefield, you may attach Thornbite Staff to it.

Equip {4}

You may activate abilities of creatures you control as though those creatures had haste.

{1}, {T}: Untap target creature.

Untap all artifacts you control during each other player's untap step.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I -- Urza's Saga gains "{T}: Add {C}."

II -- Urza's Saga gains "{2}, {T}: Create a 0/0 colorless Construct artifact creature token with 'This creature gets +1/+1 for each artifact you control.'"

III -- Search your library for an artifact card with mana cost {0} or {1}, put it onto the battlefield, then shuffle.

Vault of Champions enters the battlefield tapped unless you have two or more opponents.

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

{T}: Add {B}.

At the beginning of your end step, untap target artifact.

Sacrifice Welding Jar: Regenerate target artifact.

Each player discards their hand, then draws seven cards.

When Workshop Assistant dies, return another target artifact card from your graveyard to your hand.