possible evil box glitch?

i dont recommend going past about 30 boxes a day
they dont expire, 30/day gets better stuff, they stack to 100/slot, and you have all the time in the world to open them because they dont expire. i challenge someone else to post a desirable item proc after the 1st 30 or 40 in a day.

Good idea.
However, given that these do have a (relatively) sophisticated script behind them, I wouldn't put it past Nexon's sadism to make them give out only Red and Blue Potions once the event ends... Or even do something completely different like summon monsters or even (per Fiel's quote above) erase your system32. They are Evil Spirit boxes, after all.

It might be better to simply switch to hunting on a different char once you've gotten your 5 premiums for the day. The usefulness of untradeable scrolls on alternate chars is limited (especially since Nexon seems intent on making all the good gear in the game untradeable or at best PSoKable), but they still are a form of "a bird in the hand".