MANAHIVE

Equivalent cards to “Thopter Shop”:
1. “Thopter Shop” (reference)
2. “Skullclamp” — draws card(s) when a creature dies.
3. “Sharding Sphinx” — creates Thopter tokens when artifact creatures deal combat damage.
4. “Sai, Master Thopterist” — creates Thopter tokens when you cast an artifact.
5. “Efficient Construction” — creates Thopter tokens when you cast an artifact spell.

Reason: All are colorless artifact synergies or artifact-based token/card draw engines.