+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."

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

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

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

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

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

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

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

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

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}, {T}: Copy target activated or triggered ability you control. You may choose new targets for the copy. {3}, {T}: Copy target instant or sorcery spell you control. You may choose new targets for the copy. {4}, {T}: Copy target permanent spell you control. (The copy becomes a token.)

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

Whenever another nontoken artifact you control enters, you may pay {2}. If you do, create a token that's a copy of that artifact.

{T}, Sacrifice this artifact: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.

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.

Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +1/+1 for each artifact and/or enchantment you control. Equip {2}

You may have this artifact enter as a copy of any artifact on the battlefield.

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

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

When this artifact enters, draw a card. {1}, {T}, Sacrifice this artifact: Target creature can't attack or block this turn.

At the beginning of each opponent's upkeep, exile all cards from your hand face down. At the beginning of your upkeep, return all cards you own exiled with this artifact to your hand, then draw a card.

{2}, {T}, Sacrifice this artifact: Search your library for a land card, reveal it, put it into your hand, then shuffle.

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

Scry 2, then draw a card.

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

You may look at the top card of your library any time. You may cast artifact spells and colorless spells from the top of your library. {T}, Pay 1 life: Exile the top card of your library.

Indestructible Darksteel Juggernaut's power and toughness are each equal to the number of artifacts you control. This creature attacks each combat if able.

Karn's power and toughness are each equal to the greatest mana value among artifacts you control. At the beginning of your upkeep, add {C} for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.

Flying

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

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.

{T}: Add {C}. {2}, {T}, Sacrifice this land: Return target artifact card from your graveyard to your hand.

Indestructible {T}: Add {C}.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {C}{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.)

{T}: Add {C}. {1}, {T}: Put a storage counter on this land. {T}, Remove any number of storage counters from this land: Add {C} for each storage counter removed this way.

{T}: Untap target attacking creature. Prevent all combat damage that would be dealt to and dealt by that creature this turn.

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

{T}: Add {C}. {2}, {T}: This land becomes a copy of target land, except it has this ability.

You may have this land enter tapped as a copy of any land on the battlefield.

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

{T}: Add {C}. {T}, Sacrifice this land: Destroy target nonbasic land.