Board Thread:Questions and Answers/@comment-27281654-20160313142101/@comment-30983898-20170108035625

The most obvious way is to save your Catfood. But, what I found works for me pretty well, is to save all my free Rare Tickets until Uberfest rolls around, then use them all at once. I got Kamukura, to name one, that way, and the entire Iron Legion, so it may be worth trying for you.