This video was uploaded to Newgrounds in 2003.

There's a bonus animation that can be accessed if you pause the video at the exact moment that a certain spell is being fired at someone and click on the green star. This isn't possible on YouTube, but it is still possible on the original upload to Newgrounds:
https://www.newgrounds.com/portal/view/140341

Tip: for those on mobile, make sure to request the "Desktop Version" of the site, then zoom in on the controls to pause and skip around the frames that occur during the spell animation. The star only appears for a single frame.