| Fuzzypaws |
1. As written, meld with stone doesn't say anything about being able to move once melded, or about being able to exit in any space other than the one you entered in. It really should say that when dismissed you Step to any open space within 5 feet, but currently, it does not. (It should also have a Heightened version at higher level that gives Earth Glide, but again, currently does not.)
2. Since prepare for battle says "rolls" and not "results" the intent is probably just that it grants the actual raw die roll, with your own modifier still being applied.