User blog comment:PaulLevesque555/Thomas Becket/@comment-24965192-20190921092819/@comment-24965192-20190921121521

I think a Protection of the Faith EX can already be good with a higher defense/attack modifier, not a better version of all four effects. Select one or two from Protection of the Faith A+++ and change those. EX is preceded by A+++ in FGO terms, so I believe it's best that it should look that way.

Territory Creation is not a skill based on magecraft prowess. It's the skill that denotes the ability for a Servant to create their own field where they are advantageous over or to extract mana from. Essence of Saint can settle for a separate effect--and because you've specifically mentioned "fame", something related to critical stars can be a replacement.