, : Return target artifact card from your graveyard to your hand.

Argothian Pixies can't be blocked by artifact creatures.

Prevent all damage that would be dealt to Argothian Pixies by artifact creatures.

At the beginning of your upkeep, put a doom counter on Armageddon Clock.

At the beginning of your draw step, Armageddon Clock deals damage equal to the number of doom counters on it to each player.

: Remove a doom counter from Armageddon Clock. Any player may activate this ability but only during any upkeep step.

Enchant artifact

Whenever enchanted artifact becomes tapped or a player activates an ability of enchanted artifact without in its activation cost, Artifact Possession deals 2 damage to that artifact's controller.

Sacrifice a creature: Add .

, Sacrifice Ashnod's Transmogrant: Put a +1/+1 counter on target nonartifact creature. That creature becomes an artifact in addition to its other types.

At the beginning of combat on your turn, Battering Ram gains banding until end of combat. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's blocking.)

Whenever Battering Ram becomes blocked by a Wall, destroy that Wall at end of combat.

, : Untap X target lands.

Whenever an opponent casts an artifact spell, put a +1/+1 counter on Citanul Druid.

Flying

Clockwork Avian enters with four +1/+0 counters on it.

At end of combat, if Clockwork Avian attacked or blocked this combat, remove a +1/+0 counter from it.

, : Put up to X +1/+0 counters on Clockwork Avian. This ability can't cause the total number of +1/+0 counters on Clockwork Avian to be greater than four. Activate only during your upkeep.

, Discard a card at random: Target creature gets +2/+2 until end of turn.

As Cursed Rack enters, choose an opponent.

The chosen player's maximum hand size is four.

Destroy target artifact with mana value X. It can't be regenerated. Detonate deals X damage to that artifact's controller.

: Dragon Engine gets +1/+0 until end of turn.

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay ."

Gaea's Avenger's power and toughness are each equal to 1 plus the number of artifacts your opponents control.

: Flip a coin. If you win the flip, draw a card. If you lose the flip, counter target artifact spell you control that isn't the target of an ability from another creature named Goblin Artisans.

: Grapeshot Catapult deals 1 damage to target creature with flying.

Return all artifacts target player owns to their hand.

, : Draw a card, then discard a card.

Attacking creatures get +1/+0.

: Add .

: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.

: Target Assembly-Worker creature gets +1/+1 until end of turn.

: Add . Spend this mana only to cast artifact spells.

When Onulet dies, you gain 2 life.

Flying

Enchant artifact

Enchanted artifact's activated abilities cost less to activate. This effect can't reduce the mana in that cost to less than one mana.

, Sacrifice an artifact: Add an amount of equal to the sacrificed artifact's mana value.

Return target artifact card from your graveyard to your hand.

: Rocket Launcher deals 1 damage to any target. Destroy Rocket Launcher at the beginning of the next end step. Activate only if you've controlled Rocket Launcher continuously since the beginning of your most recent turn.

As Shapeshifter enters, choose a number between 0 and 7.

At the beginning of your upkeep, you may choose a number between 0 and 7.

Shapeshifter's power is equal to the last chosen number and its toughness is equal to 7 minus that number.

, : Target creature gets -2/-0 until end of turn.

When Su-Chi dies, add .

You may choose not to untap Tawnos's Coffin during your untap step.

, : Exile target creature and all Auras attached to it. Note the number and kind of counters that were on that creature. When Tawnos's Coffin leaves the battlefield or becomes untapped, return that exiled card to the battlefield under its owner's control tapped with the noted number and kind of counters on it. If you do, return the other exiled cards to the battlefield under their owner's control attached to that permanent.

You may choose not to untap Tawnos's Weaponry during your untap step.

, : Target creature gets +1/+1 for as long as Tawnos's Weaponry remains tapped.

As The Rack enters, choose an opponent.

At the beginning of the chosen player's upkeep, The Rack deals X damage to that player, where X is 3 minus the number of cards in their hand.

Sacrifice an artifact. If you do, search your library for an artifact card. If that card's mana value is less than or equal to the sacrificed artifact's mana value, put it onto the battlefield. If it's greater, you may pay , where X is the difference. If you do, put it onto the battlefield. If you don't, put it into its owner's graveyard. Then shuffle.

: Urza's Avenger gets -1/-1 and gains your choice of banding, flying, first strike, or trample until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

: Add . If you control an Urza's Power-Plant and an Urza's Tower, add instead.

: Add . If you control an Urza's Mine and an Urza's Tower, add instead.

Defender (This creature can't attack.)

First strike

: Until your next upkeep, target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value.

Vigilance