I've watched EXO's Let Me In I don't even know how many times and what if the missing powers are now in their former partners? Like there's been suggestions in previous MVs that the Time power was still there, but who has it hasn't been made plain. But of the leading options, for Let Me In, it really feels like Sehun is the one most likely.
... unless, of course, the missing powers are more diffuse in the remaining Legends and more than one of them can use the ability....