Whenever one or more +1/+1 counters are put on a permanent you control, you may pay {1}. If you do, create a 1/1 colorless Servo artifact creature token. {3}, {T}: Choose a counter on target permanent or player. Give that permanent or player another counter of that kind.

Astral Cornucopia enters the battlefield with X charge counters on it. {T}: Choose a color. Add one mana of that color for each charge counter on Astral Cornucopia.

Basalt Monolith doesn't untap during your untap step. {T}: Add {C}{C}{C}. {3}: Untap Basalt Monolith.

Whenever an opponent casts a nonartifact spell, put a charge counter on Chimeric Egg. Remove three charge counters from Chimeric Egg: Chimeric Egg becomes a 6/6 Construct artifact creature with trample until end of turn.

Tap two untapped artifacts you control: Untap target artifact.

As Cloud Key enters the battlefield, choose artifact, creature, enchantment, instant, or sorcery. Spells you cast of the chosen type cost {1} less to cast.

When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature. {4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

When Contagion Engine enters the battlefield, put a -1/-1 counter on each creature target player controls. {4}, {T}: Proliferate, then proliferate again. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)

Indestructible (Effects that say "destroy" don't destroy this artifact.) At the beginning of your upkeep, you may put a charge counter on Darksteel Reactor. When Darksteel Reactor has twenty or more charge counters on it, you win the game.

Empowered Autogenerator enters the battlefield tapped. {T}: Put a charge counter on Empowered Autogenerator. Add X mana of any one color, where X is the number of charge counters on Empowered Autogenerator.

{2}, {T}: Draw a card. Activate only if you control three or more lands with the same name.

At the beginning of your upkeep, choose one — • Put a +1/+1 counter on target artifact creature. • Put a charge counter on target noncreature artifact.

Multikicker {2} (You may pay an additional {2} any number of times as you cast this spell.) Everflowing Chalice enters the battlefield with a charge counter on it for each time it was kicked. {T}: Add {C} for each charge counter on Everflowing Chalice.

Colorless creatures you control get +2/+2. Whenever you tap a permanent for {C}, add an additional {C}. Whenever you cast a colorless spell, you gain 2 life.

{2}: Put a charge counter on Gemstone Array. Remove a charge counter from Gemstone Array: Add one mana of any color.

Whenever you cast an artifact spell, you may put a charge counter on Golem Foundry. Remove three charge counters from Golem Foundry: Create a 3/3 colorless Golem artifact creature token.

At the beginning of your end step, target opponent gains control of Jinxed Choker and puts a charge counter on it. At the beginning of your upkeep, Jinxed Choker deals damage to you equal to the number of charge counters on it. {3}: Put a charge counter on Jinxed Choker or remove one from it.

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

Whenever you cast an artifact creature spell, it gains sunburst. (It enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.) At the beginning of your end step, if there are thirty or more counters among artifacts and creatures you control, Lux Artillery deals 10 damage to each opponent.

{T}: Put a charge counter on Lux Cannon. {T}, Remove three charge counters from Lux Cannon: Destroy target permanent.

{4}, {T}: Put a charge counter on Magistrate's Scepter. {T}, Remove three charge counters from Magistrate's Scepter: Take an extra turn after this one.

{1}, {T}: Untap another target artifact. {3}, {T}: Target creature can't be blocked this turn.

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

Indestructible (Effects that say "destroy" don't destroy this artifact.) Myr creatures get +1/+1. {5}: Create a 1/1 colorless Myr artifact creature token.

{T}: Create a 1/1 colorless Myr artifact creature token. {T}, Tap five untapped Myr you control: Search your library for a Myr creature card, put it onto the battlefield, then shuffle.

{T}, Remove a counter from a permanent you control: Choose one — • Put a charge counter on target artifact. • Put a +1/+1 counter on target creature.

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 Serum Tank or another artifact enters the battlefield, put a charge counter on Serum Tank. {3}, {T}, Remove a charge counter from Serum Tank: Draw a card.

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

Whenever Slagstone Refinery or another nontoken artifact you control is put into a graveyard from the battlefield or is put into exile from the battlefield, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

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

When Spine of Ish Sah enters the battlefield, destroy target permanent. When Spine of Ish Sah is put into a graveyard from the battlefield, return Spine of Ish Sah to its owner's hand.

{T}, Pay 1 life: Destroy target permanent you own. {T}, Pay 2 life: Add one mana of any color. {T}, Pay 3 life: Proliferate. {T}, Pay 4 life: Draw a card. {5}: Untap Staff of Compleation.

{1}: Untap Staff of Domination. {2}, {T}: You gain 1 life. {3}, {T}: Untap target creature. {4}, {T}: Tap target creature. {5}, {T}: Draw a card.

Surge Node enters the battlefield with six charge counters on it. {1}, {T}, Remove a charge counter from Surge Node: Put a charge counter on target artifact.

At the beginning of your upkeep, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") {T}, Sacrifice three Clues: Search your library for a card, put that card into your hand, then shuffle.

You may activate abilities of creatures you control as though those creatures had haste. {1}, {T}: Untap target creature.

{4}, {T}: You may put a historic permanent card from your hand onto the battlefield. (Artifacts, legendaries, and Sagas are historic.)

{T}, Sacrifice an artifact: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

{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.

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

Echo {6} (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.) {T}: Draw a card.

{X}{1}, {T}: Put X charge counters on Ventifact Bottle. Activate only as a sorcery. At the beginning of your precombat main phase, if Ventifact Bottle has a charge counter on it, tap it and remove all charge counters from it. Add {C} for each charge counter removed this way.

Whenever you roll one or more dice, put a number of charge counters on Vexing Puzzlebox equal to the result. {T}: Add one mana of any color. Roll a d20. {T}, Remove 100 charge counters from Vexing Puzzlebox: Search your library for an artifact card, put that card onto the battlefield, then shuffle.

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

{T}: Add one mana of any color.

Sacrifice an artifact: Put a +1/+1 counter on Arcbound Ravager. 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.)

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) When Core Prowler dies, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

{T}: Put a charge counter on target artifact. Sacrifice Coretapper: Put two charge counters on target artifact.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)

Flying Historic spells you cast cost {1} less to cast. (Artifacts, legendaries, and Sagas are historic.)

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

Mindless Automaton enters the battlefield with two +1/+1 counters on it. {1}, Discard a card: Put a +1/+1 counter on Mindless Automaton. Remove two +1/+1 counters from Mindless Automaton: Draw a card.

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)

Other Myr creatures you control get +1/+1. {1}, {T}: Untap each other Myr you control.

When Myr Kinsmith enters the battlefield, you may search your library for a Myr card, reveal it, put it into your hand, then shuffle.

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

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

Flash You may cast artifact spells as though they had flash.

Affinity for artifacts Artifact landcycling {2} ({2}, Discard this card: Search your library for an artifact land card, reveal it, put it into your hand, then shuffle.)

Reach When Thran Spider enters the battlefield, you and target opponent each create a tapped Powerstone token. {7}: Look at the top four cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Trample Traxos, Scourge of Kroog enters the battlefield tapped and doesn't untap during your untap step. Whenever you cast a historic spell, untap Traxos. (Artifacts, legendaries, and Sagas are historic.)

{2}: Untap target artifact creature.

Blast Zone enters the battlefield with a charge counter on it. {T}: Add {C}. {X}{X}, {T}: Put X charge counters on Blast Zone. {3}, {T}, Sacrifice Blast Zone: Destroy each nonland permanent with mana value equal to the number of charge counters on Blast Zone.

Indestructible {T}: Add {C}.

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 {C}. {4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Power Depot enters the battlefield 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

{T}: Add {C}. {X}{X}, {T}, Sacrifice Treasure Vault: Create X Treasure tokens.

{T}: Add {C}. {7}, {T}: Create a 2/2 colorless Assembly-Worker artifact creature token.

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

(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.

{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.

{T}: Add {C}. Metalcraft — {T}: Add {C} for each Urza's land you control. Activate only if you control three or more artifacts.

{T}: Add {C}. {3}, {T}, Pay life equal to the number of colors in your commanders' color identity: Draw a card.