ozzy osbourne and ronnie james dio are both wizards but they wield very different magicks
ozzy osbourne: dark, lengthy blood rituals. summoning of dark entities. not actually all that powerful
ronnie james dio: dude standing on top of mountain shooting lightning out of his hands into the sky
More like, Dio: dude standing on top of a mountain shooting colorful beams of light and making his colorful cloak flap in the wind
Ozzy: dark, lengthy chanting in his room at 3am which turns out to be just him taking to his cat about cocaine and calling it a bitch