Thoughtcast

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

Seat of the Synod

Darksteel Citadel

Counterspell

Myr Enforcer

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

Gearseeker Serpent

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
{5}{U}: This creature can't be blocked this turn.

Utrom Monitor

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Flying (This creature can't be blocked except by creatures with flying or reach.)

Etherium Sculptor

Artifact spells you cast cost {1} less to cast.

Phyrexian Walker

Silver Myr

Island

Ornithopter

Spire Golem

Affinity for Islands (This spell costs {1} less to cast for each Island you control.)
Flying