I may be the only one on this but we all know that Helia is related to Saladin, whether they be nephew and uncle or grandson and grandfather--depending on which version of the show you like. (I prefer the latter.)
We all know that Saladin has fairly powerful magic. How powerful? We don't know but it's enough to defend himself from headmistresses Faragonda and Griffin in a fight (as seen in season three, episode twenty-three The Wizard's Challenge).
Therefore, shouldn't Helia have magic, too? I wonder, what kind of magic would he have?