{2}, {T}: Prevent the next 1 damage that would be dealt to any target this turn.

At the beginning of your upkeep, put a doom counter on this artifact. At the beginning of your draw step, this artifact deals damage equal to the number of doom counters on it to each player. {4}: Remove a doom counter from this artifact. Any player may activate this ability but only during any upkeep step.

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

You may choose not to untap this artifact during your untap step. {2}, {T}: Target creature you control gets +2/-2 for as long as this artifact remains tapped.

{T}, Sacrifice this artifact: Put a +1/+1 counter on target nonartifact creature. That creature becomes an artifact in addition to its other types.

Remove this card from your deck before playing if you're not playing for ante. This artifact enters tapped. {4}, {T}: Exile this artifact and target nontoken permanent an opponent owns. That player may pay 10 life. If they do, put this card into its owner's graveyard. Otherwise, that player owns this card and you own the other exiled card.

{X}, {T}: Untap X target lands.

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

{T}, Exile this artifact: Shuffle your graveyard into your library.

{1}, {T}: Each nontoken permanent with a name originally printed in the Antiquities expansion is sacrificed by its controller.

At the beginning of your upkeep, you gain X life, where X is the number of cards in your hand minus 4.

{2}, {T}: Draw a card, then discard a card.

Attacking creatures get +1/+0.

{6}, {T}: Return target permanent you both own and control to your hand.

{2}: Prevent the next 1 damage that would be dealt to any target this turn. Return this artifact to its owner's hand at the beginning of the next end step.

{3}, {T}: Target creature gets -2/-0 until end of turn.

Whenever an artifact you control is put into a graveyard from the battlefield, you may pay {1}. If you do, you gain 1 life.

You may choose not to untap this artifact during your untap step. {3}, {T}: Exile target creature and all Auras attached to it. Note the number and kind of counters that were on that creature. When this artifact 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.

{2}, {T}: Target creature with power 2 or less can't be blocked this turn.

You may choose not to untap this artifact during your untap step. {2}, {T}: Target creature gets +1/+1 for as long as this artifact remains tapped.

Whenever a player casts an artifact spell, you may pay {1}. If you do, you gain 1 life.

Whenever an artifact you control is put into a graveyard from the battlefield, if it wasn't sacrificed, you may pay {3}. If you do, draw a card.

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

Put any number of target artifact cards from target player's graveyard on top of their library in any order.

Return target artifact card from your graveyard to your hand.

Destroy all artifacts. They can't be regenerated.

{W}{W}, {T}: Return target artifact card from your graveyard to your hand.

{T}: Prevent the next 2 damage that would be dealt to target artifact creature this turn.

This creature can't be blocked by artifact creatures. Prevent all damage that would be dealt to this creature by artifact creatures.

Prevent all damage that would be dealt to this creature by artifact sources.

Sacrifice an artifact: This creature gets +2/+2 until end of turn.

At the beginning of combat on your turn, this creature 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 this creature becomes blocked by a Wall, destroy that Wall at end of combat.

{2}: Regenerate this creature.

Flying This creature enters with four +1/+0 counters on it. At end of combat, if this creature attacked or blocked this combat, remove a +1/+0 counter from it. {X}, {T}: Put up to X +1/+0 counters on this creature. This ability can't cause the total number of +1/+0 counters on this creature to be greater than four. Activate only during your upkeep.

{2}: This creature gets +1/+0 until end of turn.

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

{T}: 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.

{T}: This creature deals 1 damage to target creature with flying.

As long as this creature is untapped, all damage that would be dealt to you by artifacts is dealt to this creature instead.

Banding (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.) At the beginning of your upkeep, this creature deals 3 damage to you unless you discard a card. If it deals damage to you this way, tap it.

When this creature dies, you gain 2 life.

{T}, Sacrifice an artifact: This creature deals 2 damage to any target.

Flying

You may choose not to untap this creature during your untap step. {T}: Tap target artifact. It doesn't untap during its controller's untap step for as long as this creature remains tapped.

{T}, Sacrifice an artifact: Add an amount of {B} equal to the sacrificed artifact's mana value.

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

Changeling

{0}: This creature 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.)

Defender (This creature can't attack.) First strike

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

Flying (This creature can't be blocked except by creatures with flying or reach.) First strike (This creature deals combat damage before creatures without first strike.) At the beginning of your upkeep, you may sacrifice an artifact. If you don't, tap this creature and it deals 2 damage to you.

Enchant artifact Whenever enchanted artifact becomes tapped or a player activates an ability of enchanted artifact without {T} in its activation cost, this Aura deals 2 damage to that artifact's controller.

Enchant creature Enchanted creature can't be blocked by artifact creatures. Prevent all damage that would be dealt to enchanted creature by artifact sources. Enchanted creature can't be the target of abilities from artifact sources.

Players can't untap more than one artifact during their untap steps.

All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."

Sacrifice a creature: Destroy target artifact. Activate only during your upkeep and only once each turn.

Enchant artifact Enchanted artifact's activated abilities cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Counter target artifact spell.

Destroy target artifact. It can't be regenerated. That artifact's controller gains life equal to its mana value.

Return all artifacts target player owns to their hand.

{T}: Add {C}. {1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. {T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

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

{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.