cache exists in db
Equivalent cards to Mycosynth Golem (colorless, artifact, artifact cost reduction/affinity):
1. Foundry Inspector – Reduces cost of artifact spells.
2. Etherium Sculptor – Reduces cost of artifact spells (blue artifact creature).
3. Semblance Anvil – Imprint and reduce costs of spells of that type.
4. Cloud Key – Reduces costs for a chosen type (can pick artifact).
Reason: All are artifact permanents that reduce artifact costs or have affinity for artifacts. None have the exact same Affinity for Artifacts + Free cast effect, but these are closest in function and color.