Thoughtcast

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Draw two cards.

Artificer's Epiphany

Draw two cards. If you control no artifacts, discard a card.

Voyage Home

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
You draw three cards and gain 3 life.

Annul

Counter target artifact or enchantment spell.

Into Thin Air

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Return target artifact to its owner's hand.

Argivian Restoration

Return target artifact card from your graveyard to the battlefield.

Aeolipile

{1}, {T}, Sacrifice this artifact: It deals 2 damage to any target.

Assert Authority

Affinity for artifacts (This spell 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.