Tried to make a mage deck with Jepetto.
Mulligan for jepetto.
Game plan: stay alive until you can play jepetto and get cheap maly or antoni or alex.
Then see if you can setup the otk or the ttk.
Either: Alex > enemy = 15, then one mana maly + 2 fire balls = dead.
Or: Alex then generate a lot fire balls with antony and smash face.
You can switch out the faceless for another spell, but he can help you get another key piece or copy a nice enemy (before you kill it). Another thought is to copy a key piece to hand with a brew master. I also experimented with luna's galaxy spell to get all of them to 1 mana :).
Win rate is about 50% on 10 games or so, I thought it would be ultimate trash but something is working.