Foundry Inspector
Artifact Creature — Construct
Artifact spells you cast cost 
less to cast.
"Delicate resonance detectors could scan the assembly lines for metallic impurities, loose bolts, and freak occurrences of sentience." —Tawnos, proposal for overseer prototype
3/2
イラスト：
The Brothers' War Retro Artifacts#79zアンコモン英語適正
裁定
2016年9月20日
If an artifact spell has 
in its mana cost, choose the value for X first, and then reduce the cost by . For example, an artifact that costs with X chosen as 4 costs to cast if you control Foundry Inspector.
2016年9月20日
Once a player has announced an artifact spell, no player may take actions to try to remove Foundry Inspector from the battlefield before that spell’s cost is locked in.