Duration and activation time of the Foretell power

[Lorian]

The Foretell power of the Foresight school says:

Foretell (Su): At 8th level, you can utter a prediction of the immediate future. While your foretelling is in effect, you emit a 30-foot aura of fortune that aids your allies or hinders your enemies, as chosen by you at the time of prediction. If you choose to aid, you and your allies gain a +2 luck bonus on ability checks, attack rolls, caster level checks, saving throws, and skill checks. If you choose to hinder, your enemies take a –2 penalty on those rolls instead. 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.

I'm assuming since it doesn't say otherwise it's a standard action to activate.

Is it just til end of round, or can I choose to keep it up and end it when I'm done with it?

The language on the number of rounds per day confuses me a bit.

I'm hoping it's standard to activate, can leave up, but didn't want to cheat :D

Thanks!

[Archaeik]

This was the only other thread I found with a quick search.

It's pretty certain it's a standard to activate.
I would hope you don't have to spend that every round. (and it seems like most similar(aura) abilities use a free action maintain)

The language about duration seems pretty normal to me. It specifies that the quantum is '1 round' and that the total(wizard level) need not be spent all at once.

[Lorian]

OK, the standard to activate made sense, I was mostly confused if it could be maintained since that's normally called out.

[Glewistee]

I am looking for clarification on maintaining the ability.