What incantations would a “Knight of Marika” use?

I’ve never really used spells in ER but I wanted to make a str/faith build with the background of being knight who answered directly to Marika before the shattering. What kind of incantations would fit that background? I would think that things like fire and bloodflame would be considered heresy but what about crucible? Also open to weapon suggestions, I’m currently using Treespear and loving it.