Well during gambit I buy pink keys, I spent about 2 million on them this time to get over the 1k mark. Outside of that a bit on kurito since it costs 1k each time. Also a bit on changing n-wilds to rwilds. Also during elite guard i buy some of the half hp potions for SEG but that's like 200k max an event.

Also once upon a time there was a bundle for 6 ngatcha and 1 card reveal for 9k pero (I think) so I spent a lot on that however I doubt they will do another one of those any time soon.