@ranma_hf buffs are listed in the building info page for the city the macguffin is housed in.

so i tried it out, i only got passives, not sure they had any buffs? i like the idea ill have to give it another run

Very cool idea and fun to play with, I did notice that it causes issues with trying to run other additional great people such as Great Believers and Explorers as they don't appear.