Emissary of Despair

Flying
Whenever Emissary of Despair deals combat damage to a player, that player loses 1 life for each artifact they control.

Furnace Dragon

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying
When Furnace Dragon enters, if you cast it from your hand, exile all artifacts.

Chromescale Drake

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying
When Chromescale Drake enters, reveal the top three cards of your library. Put all artifact cards revealed this way into your hand and the rest into your graveyard.

Emissary of Hope

Flying
Whenever Emissary of Hope deals combat damage to a player, you gain 1 life for each artifact that player controls.

Drill-Skimmer

Flying
Drill-Skimmer has shroud as long as you control another artifact creature. (It can’t be the target of spells or abilities.)

Darksteel Gargoyle

Flying
Indestructible (Damage and effects that say “destroy” don’t destroy this creature.)

Spire Golem

Affinity for Islands (This spell costs less to cast for each Island you control.)
Flying

Eater of Days

Flying, trample
When Eater of Days enters, you skip your next two turns.

Pristine Angel

Flying
As long as Pristine Angel is untapped, it has protection from artifacts and from each color.
Whenever you cast a spell, you may untap Pristine Angel.

Neurok Prodigy

Flying
Discard an artifact card: Return Neurok Prodigy to its owner’s hand.

Grimclaw Bats

Flying
, Pay 1 life: Grimclaw Bats gets +1/+1 until end of turn.

Pteron Ghost

Flying
Sacrifice Pteron Ghost: Regenerate target artifact.

Arcbound Stinger

Flying
Modular 1 (This creature enters with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Goblin Dirigible

Flying
Goblin Dirigible doesn’t untap during your untap step.
At the beginning of your upkeep, you may pay . If you do, untap Goblin Dirigible.

Broodstar

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying
Broodstar’s power and toughness are each equal to the number of artifacts you control.

Looming Hoverguard

Flying
When Looming Hoverguard enters, put target artifact on top of its owner’s library.

Nim Shrieker

Flying
Nim Shrieker gets +1/+0 for each artifact you control.

Clockwork Dragon

Flying
Clockwork Dragon enters with six +1/+1 counters on it.
Whenever Clockwork Dragon attacks or blocks, remove a +1/+1 counter from it at end of combat.
: Put a +1/+1 counter on Clockwork Dragon.

Reiver Demon

Flying
When Reiver Demon enters, if you cast it from your hand, destroy all nonartifact, nonblack creatures. They can’t be regenerated.

Neurok Familiar

Flying
When Neurok Familiar enters, reveal the top card of your library. If it’s an artifact card, put it into your hand. Otherwise, put it into your graveyard.

Lumengrid Sentinel

Flying
Whenever an artifact you control enters, you may tap target permanent.

Chimney Imp

Flying
When Chimney Imp dies, target opponent puts a card from their hand on top of their library.

Wizard Replica

Flying
, Sacrifice Wizard Replica: Counter target spell unless its controller pays .