Kent Trustrup's page

Does it require a standard action to activate it each round?

There is an odd phrasing:
You can use this ability for a number of rounds per day equal to your wizard level. These rounds do not need to be consecutive.

That indicates you don't have to activate it each round, but just once. But is it a free action to stop it, and can you activate it several times untill you use all the rounds???

Badly written, bad author!

Very neat item, but at 4.000 players would use it, at 40.000 it's a sure sell.

As someone else said, Control wind scrolls.

Price is a major factor for wonderous items, which makes so many items converted directly from 3.5 close to useless.

In 3.5 they figured it out, and made the Magic Item Compendium, with more reasonably priced items. Some people would actually use, instead of just +X to stat item.