Wild Magic gives you a random chance to pull any number of spells, not just ones you know or don’t know.

So you could do a Fireball by accident, centering on you, killing Scratch (and yourself) in the process.

As someone who works Cybersecurity, Shift browser is a PUP, or Potentially Unwanted Program. Based off Chromium, it introduces new marketing vectors for ads to go after you.

Better to LibreWolf or WaterFox than to Shift browser.