Tempest of Air question

By player3900306, in Rules Questions

Honored sages,

If I am reading the description of Tempest of Air (p.195) correctly, it blasts damaging wind in all directions. This would be a problem if one is with other party members, near scroll-laden desks, etc., and thus an odd Invocation to teach starting Isawa students. Am I missing something? Is casting as, say, a cone an option instead? Thank you.

Tempest of Air's range is 2-3 so targets in range 0-1 are safe.

It is less a blast and more a tempest, meaning a circular area of wind.
But yes, sensei advise against using it in libraries.

Yes, this invocation will hit friend and foe alike, so the usual tactic is to get your allies to stay within range 1 of you, and they won't be targeted. Or cast it when you are surrounded by the enemy, it's a cheap and effective crowd control.