Tyramisu
My hipotesis is that the pope don't want to have the artifacts, but to Argent to collect them. Why?, simple because he can't use them, for that, he need that Argent activate the "event" that is going to hapen when he finally have all of them. Probably, going back to 500 years ago. For that reason, no matter what Argent woud do, the pope is going to have the results that he wants. In other words, all his master plan is a trap to make Argent believe that, to f*ck the church, he need to found the artifacts, when in fact, it's exactly the other way arround.