You don't see something as gloriously weird as Maestra of the Masquerade without at least trying to make practical use of it beyond just bamboozling the opponent at the start of the game. The dream is to somehow exploit it with Tess Greymane, but that has problems with not being able to run anything other than rogue and neutral cards, so you'll quickly return to a normal burgle rogue except for being able to get a couple of extra cards from Maestra's pretend class with things like Wandmaker. 

That's fine, but not exciting.

Then it hit me. The most glorious little unused meme card that turns our hopes for a meme into reality. Behold, Wyrmrest Purifier!

Originally intended for Pure Paladin, now used to make a genuine, bona fide dual-class deck. No need to waste time generating cards, just transform all your neutrals at the start! And if you don't draw the purifier early, no worries because you can make a fully competent deck that just happens to run Maestra, Tess and 2x Purifier.

Will it be good? No. But is it the sort of thing that I keep playing HS for? Absolutely!