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Assert Authority
{5}{U}{U}
Instant
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Blinkmoth Infusion
{12}{U}{U}
Instant
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
Untap all artifacts.

Broodstar
{8}{U}{U}
Creature -- Beast
*/*
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
Flying
~this~'s power and toughness are each equal to the number of artifacts you control.

Chromescale Drake
{6}{U}{U}{U}
Creature -- Drake
3/4
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
Flying
When ~this~ 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.

Into Thin Air
{5}{U}
Instant
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
Return target artifact to its owner's hand.

Quicksilver Behemoth
{6}{U}
Creature -- Beast
4/5
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
When ~this~ attacks or blocks, return it to its owner's hand at end of combat. (Return it only if it's on the battlefield.)

Qumulox
{6}{U}{U}
Creature -- Beast
5/4
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
Flying

Somber Hoverguard
{5}{U}
Creature -- Drone
3/2
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
Flying

Thoughtcast
{4}{U}
Sorcery
Affinity for artifacts (~this~ costs {1} less to cast for each artifact you control.)
Draw two cards.