Glass Golem

Artifact Creature — Golem (6/2)

Goblin Replica

Artifact Creature — Goblin (2/2)

, Sacrifice Goblin Replica: Destroy target artifact.

Goblin War Wagon

Artifact Creature — Juggernaut (3/3)

Goblin War Wagon doesn't untap during your untap step.
At the beginning of your upkeep, you may pay . If you do, untap Goblin War Wagon.

Golos, Tireless Pilgrim

Legendary Artifact Creature — Scout (3/5)

When Golos, Tireless Pilgrim enters the battlefield, you may search your library for a land card, put that card onto the battlefield tapped, then shuffle.
: Exile the top three cards of your library. You may play them this turn without paying their mana costs.

Guardian Automaton

Artifact Creature — Construct (3/3)

When Guardian Automaton dies, you gain 3 life.

Guardians of Koilos

Artifact Creature — Construct (4/4)

When Guardians of Koilos enters the battlefield, you may return another target historic permanent you control to its owner's hand. (Artifacts, legendaries, and Sagas are historic.)

Hedron Rover

Artifact Creature — Construct (2/2)

Landfall — Whenever a land enters the battlefield under your control, Hedron Rover gets +2/+2 until end of turn.

Hematite Golem

Artifact Creature — Golem (1/4)

: Hematite Golem gets +2/+0 until end of turn.

Henge Guardian

Artifact Creature — Dragon Wurm (3/4)

: Henge Guardian gains trample until end of turn.

Henge Walker

Artifact Creature — Golem (2/2)

Adamant — If at least three mana of the same color was spent to cast this spell, Henge Walker enters the battlefield with a +1/+1 counter on it.

Hewed Stone Retainers

Artifact Creature — Golem (4/4)

Cast this spell only if you've cast another spell this turn.

Hollow One

Artifact Creature — Golem (4/4)

This spell costs less to cast for each card you've cycled or discarded this turn.
Cycling (, Discard this card: Draw a card.)

Hopping Automaton

Artifact Creature — Construct (2/2)

: Hopping Automaton gets -1/-1 and gains flying until end of turn.

Igneous Golem

Artifact Creature — Golem (3/4)

: Igneous Golem gains trample until end of turn.

Jetfire, Ingenious Scientist // Jetfire, Air Guardian

Legendary Artifact Creature — Robot // Legendary Artifact — (3/4)

More Than Meets the Eye (You may cast this card converted for .)
Flying
Remove one or more +1/+1 counters from among artifacts you control: Target player adds that much . This mana can't be spent to cast nonartifact spells. Convert Jetfire.

Jetfire, Air Guardian

Living metal (As long as it's your turn, this Vehicle is also a creature.)
Flying
: Convert Jetfire, then adapt 3. (If it has no +1/+1 counters on it, put three +1/+1 counters on it.)

Jhoira's Familiar

Artifact Creature — Bird (2/2)

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

Junk Diver

Artifact Creature — Bird (1/1)

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

Junk Golem

Artifact Creature — Golem (0/0)

Junk Golem enters the battlefield with three +1/+1 counters on it.
At the beginning of your upkeep, sacrifice Junk Golem unless you remove a +1/+1 counter from it.
, Discard a card: Put a +1/+1 counter on Junk Golem.

Junktroller

Artifact Creature — Golem (0/6)

Defender
: Put target card from a graveyard on the bottom of its owner's library.

Kuldotha Forgemaster

Artifact Creature — Construct (3/5)

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