At first I read that as “top-level aliases” and wondered why you meant T for 2.

Then I suddenly realized the more pressing question: if there are top-level aliases, are there sub aliases? And what would they look like?

Well ever set a password or pin or security question for a bank? You might be able to construe these as riddles…

Now I want to know wether the rules allow you to stand perfectly inside your mirror image (don’t have a 5th ed./any other D&D ed. rulebook to check myself, sorry)… Because if it does (without going all wavy or otherwise distorting) and it casts a reflection this could be a fun “find the hidden vampire in this banquet hall with mirrors” scenario!