I've noticed that a few spells seem to have buggy graphics. This is what I've been noticing:
The Vampire spell sometimes doesn't show the life force being drained out of the opponent, and sometimes when it does, it shows it in the wrong place. When the Vampire returns health to the caster, not all of the three branches of life force being given appear, and sometimes none of them do.
The Spectral Blast spell has a similar problem. The Fire and Ice attacks of the Spectral Blast spell often don't show up, and when they do, it's usually only half of the animation. The Storm attack on spectral blast doesn't have this problem, it's only the Fire and Ice attacks.
Finally, the Death Minotaur spell. When the Death Minotaur uses his second attack, and swings his axe, the red whispy thing usually doesn't appear. Sometimes it does, but mostly it doesn't.
Just wanted to bring these problems to your attention.