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.)

Darksteel Citadel

Spire Golem

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

Thoughtcast

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

Counterspell

Silver Myr

Island

Frogmite

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

Iron Giant

Seat of the Synod

Myr Enforcer

Ornithopter

Phyrexian Walker

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.