Fire Twister

is a Tier 3 Fire + Air Path Spell.

The caster conjures a twister composed of rapidly revolving flames and super-heated air. The twister is some 5-15 meters tall and, at base tier, causes severe harm to anyone and anything within 2 meters of the center and significant harm to those within 4 meters of the center. At base tier, the twister moves of its own accord in a random path after being created. At base tier +1 and above, the caster can control the path that the fire twister takes, as well as its speed (which can be up to human running speed). The required investment into this spell is substantial; the twister gradually manifests over the first 10 seconds of maintaining the spell, and only dissipates over 10 seconds after the caster stops maintaining the spell.