Archery improvements!

Yes, you're right but Spark is a skill that has 60 secs cooldown...to change the status so much just to get 1 sec for invisibility, doesn't look appealing to me.

with 100 of intelligence you will have 6 seconds (just have a good legendary diamond)

OK...and with no INT? Will be 4 or something...does it worth it for 2 extra secs?

without int it does 16 + the diamond so a priori 2 seconds if you do not have equipment adding the int, so if you get full int you win 4 seconds.