ASW – Alternative hero leveling.

Besides having to cast lightning, there's also an aesthetic element in the names and meanings: Storm Wind is generated by Storm (the Lord of Storms), and the initiative from stunning is also reduced, just like from Storm Wind.

Then, move the mana explosion to Light – something like Solar Burn. And that would be logical, as mana is already used in the Secrets of Light, for example. Although you moved the Secrets to sorcery.

Added 5 minutes later
Regarding Light, I'd say Bestowing Blessing < Bestowing Protection < Righteous Wrath.
Because both punishing and haste are very powerful spells.
Evasion is useless (unless used with TE, where it's much better, although it still remains a specialized spell). Its role is only in targeted attacks, as it draws the AI's attention to itself (it's cool to put evasion on ents, and they'll start shooting at them). Blessing is a specialized targeted spell (for a unit with a high stat range), and it doesn't work well in a mass variant. Dispel is purely a situational spell (you can't build a strategy around it), and it's also an area-of-effect spell.