I had a lucid about two nights ago, that involved me in a starbucksesque area, and I wanted to fulfill one of my fantasies of using a powerful spell in harry potter, so I got out a wand, and at first used the Sectum Sempra spell, which made a guy turn queasy, and then finally I used a speell which had an incantation of

"ILLUMINATI"

this spell shot powerful beams of white light disinigrated my enemies that were there. It was a fun rush of power.