I had to reject yet another manuscript that had LDS people having magical, mystical experiences.
You just cannot mix the two and have your book sell in the LDS market. Mormons cannot wield magic. They cannot meet up with aliens or be whisked off to a fantasy world. And you just cannot have them dealing with talking animals who pop in and out of existence in one scene, and then have them (the people, not the animals) being baptised in the next. It doesn't fit in our belief structure.
If you want to write fantasy, then write fantasy. Leave the Church out of it. If you want to write a conversion story, write that--but the character's conversion cannot be based upon a fantastic experience.
Well, okay, maybe if you have time travelling teens who go back to the days of the Book of Mormon, (or vice versa) but even that is a stretch for me.