In Luz's case, practicing was actually something that needed some spotting. The last time she did a combination she wound up conjuring a hand that tried to grab her and drag her down to somewhere unknown!

"Oh, here. I don't know the next time I'll ever be back home. If I ever go back there though, I'm sure I'd be trying new combinations there too."

Luz grinned. "Cool. I'm actually less experienced making buildings. Any advice you could give here would help!"