Favorite superpower would be telekinesis. Namely if I could have incredibly fine control over it, so I could do things like hold gun hammers back, manipulate wires, or pull the plugs of players I don’t like from across the planet.
Failing that, just normal telekinesis is fine.
As for elemental powers… always lightning. I know it wouldn’t work half as well or as safely in real life, but I’m basic and it’s the most basic magic, so I love it.