Scrolls R US said:
That does not answer my question at all. What I want to know is, do you lose the ability to use them twice if you don't hit prior to level 50? Understand?
Lord Juglar's response does answer your question, if you've already read the Tower Guide. If you haven't read it, I recommend that you do. The answer you seek lies in wait for you there.
Perhaps I'm mistaken, but your response reeks of attitude. That is generally not a good method of obtaining help.