Gearsmith Guardian

This creature gets +2/+0 as long as you control a blue creature.

Tezzeret, Cruel Machinist

+1: Draw a card.
0: Until your next turn, target artifact you control becomes a 5/5 creature in addition to its other types.
−7: Put any number of cards from your hand onto the battlefield face down. They're 5/5 artifact creatures.

Tezzeret's Gatebreaker

When this artifact enters, look at the top five cards of your library. You may reveal a blue or artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
{5}{U}, {T}, Sacrifice this artifact: Creatures you control can't be blocked this turn.

Riddlemaster Sphinx

Flying (This creature can't be blocked except by creatures with flying or reach.)
When this creature enters, you may return target creature an opponent controls to its owner's hand.

Skilled Animator

When this creature enters, target artifact you control becomes an artifact creature with base power and toughness 5/5 for as long as this creature remains on the battlefield.

Divination

Pendulum of Patterns

When this artifact enters, you gain 3 life.
{5}, {T}, Sacrifice this artifact: Draw a card.

Exclusion Mage

When this creature enters, return target creature an opponent controls to its owner's hand.

Scholar of Stars

When this creature enters, if you control an artifact, draw a card.

Tezzeret's Strider

As long as you control a Tezzeret planeswalker, this creature has menace. (It can't be blocked except by two or more creatures.)

Gearsmith Prodigy

This creature gets +1/+0 as long as you control an artifact.

Uncomfortable Chill

Creatures your opponents control get -2/-0 until end of turn.
Draw a card.

Skyscanner

Flying
When this creature enters, draw a card.

One with the Machine

Draw cards equal to the greatest mana value among artifacts you control.

Dwindle

Enchant creature
Enchanted creature gets -6/-0.
When enchanted creature blocks, destroy it. (The attacking creature remains blocked.)

Field Creeper

Island

Snapping Drake

Flying (This creature can't be blocked except by creatures with flying or reach.)

Meteor Golem

When this creature enters, destroy target nonland permanent an opponent controls.