Air Elemental

Field Creeper

Gearsmith Prodigy

Gearsmith Prodigy gets +1/+0 as long as you control an artifact.

Diamond Mare

As Diamond Mare enters, choose a color.
Whenever you cast a spell of the chosen color, you gain 1 life.

Scholar of Stars

When Scholar of Stars enters, if you control an artifact, draw a card.

Gearsmith Guardian

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

Aviation Pioneer

When Aviation Pioneer enters, create a 1/1 colorless Thopter artifact creature token with flying.

Waterknot

Enchant creature
When Waterknot enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

Meteor Golem

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

Befuddle

Target creature gets -4/-0 until end of turn.
Draw a card.

Aven Wind Mage

Flying
Whenever you cast an instant or sorcery spell, Aven Wind Mage gets +1/+1 until end of turn.

Riddlemaster Sphinx

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

Divination

Arcane Encyclopedia

Gilded Sentinel

Tempest Djinn

Flying
This creature gets +1/+0 for each basic Island you control.

Sai, Master Thopterist

Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.
{1}{U}, Sacrifice two artifacts: Draw a card.

Island

Zahid, Djinn of the Lamp

You may pay {3}{U} and tap an untapped artifact you control rather than pay this spell's mana cost.
Flying