He did a wonderful job, but as he was returning my plant to my custody, he explained "I watered her every other day, I gave her new dirt, moved her into the sunshine, prayed the rosary-"

"What?"

He looked at me, confused. "Isn't she a plant you pray with?"

"No," I said slowly. "She's a prayer plant. That's the... colloquial name of the plant."

Upon seeing his stricken face, I realized something went wrong. Turns out, this entire time, he's been including my plant in on his prayers and leaving her near icons.

Like, yes, a lot of Catholic clergy during the Middle Ages did practice magic in secret, but they weren't keeping it secret as some sort of sinister top-down conspiracy to deny magic to the Common People: they were mostly keeping it secret from their own superiors. It wasn't one of those "well, it's okay when we do it" deals: the Church very much did not want its local priests doing wizard shit. We have official records of local priests being disciplined for getting caught doing wizard shit. And the preponderance of evidence is that most of them would take their lumps, promise to stop doing wizard shit, then go right back to doing wizard shit.