User blog comment:CeruleanGryphon/Preparing for Tower- what to spend money on?/@comment-9611915-20130811140857

I've participated in the last two Tower events and done a few 6 packs each time for mags. I agree with ClockworkBunni below, additional acquisition hardly does anything, but the other two will really come in handy.

Last Tower event I saw lots of free players saying they could hardly find any wandering ghosts, and yet I was finding them every now and again at a steady rate and I only had one of the mags. Idk, maybe it was luck, but I think the mag helped a lot. Also, the mags that increases the chance of finding the item you have to collect, those activate the most so I'd say they're the most useful.

I think one or two 6 packs can be worth it, you should get at least one 4 star out of it too which is nice. Good luck~