I'm late to the discussion, but here goes.
Option 6 ("Paul has Site Access. N.T. Enhancements used by Paul gain Cannot Be Negated. Negate all N.T. Evil enhancements. Cannot be negated.") is the perfect hero for the BoM deck, or any FBTN/Coliseum deck. Grants CBN enhancements that get around Coliseum, can use all 7 GEs from Gabe's deck, and makes NT defenses FBTN.
I really like The Guardian's idea. Because Paul was so important in the building of many churches and he converted so many unbelievers, I'd build it more towards church-building and conversion than hand protection. Hand protection can be handled by a less "important" hero
10/10 Green/Clay
TC
Identifiers: May hold one active Miraculous Handkerchiefs or Paul's Books and Parchments
"Missionaries have Site Access. If one rescues, search deck or discard pile for a Romans - Philemon hero: You may decrease Paul 7/7 to draw 1, band that hero into battle, and convert a human to Clay. Cannot be negated."Why the self-decrease? Because of II Corinthians 11:23-30 and 12:9, and Paul's emphasis in his writings on making himself less so that others can be built up and Christ can be glorified, and to add a limiting factor to how often or easy it is to activate the ability, and the fact that it hasn't really been done before.