Thunderstorm

is a Tier 5 Lightning + Air Path Spell.

The caster conjures a massive thunderstorm over a large volume of space, easily covering the size of a city and beyond, and hundreds of meters high at base tier. The required investment into this spell is substantial; the thunderstorm gradually manifests over the first 3 minutes of maintaining the spell, and only dissipates over 3 minutes after the caster stops maintaining the spell.