This should be easier, because each one will be based on a Mythical being.
This gives more variety than superpowers, which makes them more distinct and easier to remember.
If you do get confused just ask, I'm sure one of us will remind you.
“She'd become a governess. It was one of the few jobs a known lady could do. And she'd taken to it well. She'd sworn that if she did indeed ever find herself dancing on rooftops with chimney sweeps she'd beat herself to death with her own umbrella.”
― Hogfather