Ok I searched and saw nothing about this and i'm not 100% if it sure works cause i did a few patches ago but, what you do is first get quite a bit of Pent. amulets, then put them on F1 or any F key for that matter, then go to a portal jump through it, when you go through slam the F key that the Pent amulets were on and you can use as many as you want. Like I said not 100% sure if it still works, but if it does +k would be appreciated ^_^.