I think many people would also say that these may also be quite powerful:
Life (heals, absorb shields) Storm (crazy insane damage)
This leaves fire and myth lacking. So I suggest some new spells to make these schools more attractive for pvp.
Pip Burn Fire 4 Pips
Use the power of fire to burn away the opponents pips/powerpips.
Exactly as it sounds. Costs 4 pips and removes all of your opponents pips, whether that be 1 or 14 (7power pips). This buys the fire wizard time for his DoT spells to take an effect while the opponent rebuilds his pips.
And for Myth:
Disbelief Myth 4 Pips
The wizard does not believe in the magic therefore the magic does not exist.
This spell ideally would create a shield that would only be affected by a damaging spell that hits for over 500 damage (including any buffs). The first spell that would hit for 400 or more damage would be negated doing 0 damage. This would cause the opponent to either pop all blades, traps on a weaker spell to break the shield or spend many pips on a higher level off school spell. Wands, DoTs, and anything hitting for less than 400 would not be affected by the shield and would not affect the shield.
This spell could also be edited to only cost 1 or 2 pip and be breakable by any damage, even a wand. This would still however force the opponent to pop any feint, hex, curse, or balanceblade they have up. It could still be used with the intention of blocking a fully buffed spell, but the timing would have to be perfect.
Honestly, I had Judgement in mind when thinking of both of these spells. Both of these I think would give more options for a defense against Judgement. Also if these spells are trainable by everyone it makes fire and myth as a viable secondary school for a pvp build. Because lets face it, when you are choosing your secondary school for a pvp character, how many people choose fire or myth?