Also, that unless shifts are involved, it will mostly do what you wanted it to, at least it can't do something entirely different (as with the captain example).
Don't you always have at least one shift with spontaneous magic?
When a spell discharges into something else - like it did for Zuno with the mind bullets - is that basically shifting points from the primary discharge into the secondary? As in a 2-2-2 with 3 shifts could produce two 1-1-1 discharges?