Steelswarm Operator

Flying
{T}: Add {U}. Spend this mana only to cast an artifact spell.
{T}: Add {U}{U}. Spend this mana only to activate abilities of artifact sources.

Mechanozoa

When this creature enters, tap target artifact or creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Warp {2}{U} (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)

Iron Myr

Rig for War

Target creature gets +3/+0 and gains first strike and reach until end of turn.

Atomic Microsizer

Equipped creature gets +1/+0.
Whenever equipped creature attacks, choose up to one target creature. That creature can't be blocked this turn and has base power and toughness 1/1 until end of turn.
Equip {2}

Mountain

Plasma Bolt

Plasma Bolt deals 2 damage to any target.
Void — Plasma Bolt deals 3 damage instead if a nonland permanent left the battlefield this turn or a spell was warped this turn.

Kavaron Turbodrone

{T}: Target creature you control gets +1/+1 and gains haste until end of turn. Activate only as a sorcery.

Cryoshatter

Enchant creature
Enchanted creature gets -5/-0.
When enchanted creature becomes tapped or is dealt damage, destroy it.

Red Tiger Mechan

Haste
Warp {1}{R} (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)

Riverpyre Verge

{T}: Add {R}.
{T}: Add {U}. Activate only if you control an Island or a Mountain.

Mechan Shieldmate

Defender
As long as an artifact entered the battlefield under your control this turn, this creature can attack as though it didn't have defender.

Nutrient Block

Indestructible (Effects that say "destroy" don't destroy this artifact.)
{2}, {T}, Sacrifice this artifact: You gain 3 life.
When this artifact is put into a graveyard from the battlefield, draw a card.

Mechan Navigator

Whenever this creature becomes tapped, draw a card, then discard a card.

Island

Mental Modulation

This spell costs {1} less to cast during your turn.
Tap target artifact or creature.
Draw a card.

Illvoi Light Jammer

Flash
When this Equipment enters, attach it to target creature you control. That creature gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)
Equipped creature gets +1/+2.
Equip {3}

Pinnacle Emissary

Whenever you cast an artifact spell, create a 1/1 colorless Drone artifact creature token with flying and "This token can block only creatures with flying."
Warp {U/R} (You may cast this card from your hand for its warp cost. Exile this creature at the beginning of the next end step, then you may cast it from exile on a later turn.)

Valkyrie Aerial Unit

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Flying
When this creature enters, surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Scorpion Sentinel

As long as you control seven or more lands, this creature gets +3/+0.

Slagdrill Scrapper

{2}, {T}, Sacrifice another artifact or land: Draw a card.

Full Bore

Target creature you control gets +3/+2 until end of turn. If that creature was cast for its warp cost, it also gains trample and haste until end of turn.

Boosted Sloop

Menace
Whenever you attack, draw a card, then discard a card.
Crew 1 (Tap any number of creatures you control with total power 1 or more: This Vehicle becomes an artifact creature until end of turn.)

Zookeeper Mechan

{T}: Add {R}.
{6}{R}: Target creature you control gets +4/+0 until end of turn. Activate only as a sorcery.

Nanoform Sentinel

Whenever this creature becomes tapped, untap another target permanent. This ability triggers only once each turn.

Cryogen Relic

When this artifact enters or leaves the battlefield, draw a card.
{1}{U}, Sacrifice this artifact: Put a stun counter on up to one target tapped creature. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Oreplate Pangolin

Whenever another artifact you control enters, you may pay {1}. If you do, put a +1/+1 counter on this creature.

Selfcraft Mechan

When this creature enters, you may sacrifice an artifact. When you do, put a +1/+1 counter on target creature and draw a card.