Mycosynth Golem

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Artifact creature spells you cast have affinity for artifacts. (They cost less to cast for each artifact you control.)

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.

Somber Hoverguard

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying

Thoughtcast

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Draw two cards.

Frogmite

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Frogmite

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Somber Hoverguard

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying

Thoughtcast

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Draw two cards.

Myr Enforcer

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Qumulox

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying

Oxidda Golem

Affinity for Mountains (This spell costs less to cast for each Mountain you control.)
Haste

Spire Golem

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

Myr Enforcer

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Frogmite

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Myr Enforcer

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Frogmite

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Qumulox

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying

Thoughtcast

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Draw two cards.

Myr Enforcer

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

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.

Qumulox

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying

Spire Golem

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

Oxidda Golem

Affinity for Mountains (This spell costs less to cast for each Mountain you control.)
Haste

Thoughtcast

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Draw two cards.

Furnace Dragon

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