Board Thread:Tips, Tricks, and Questions/@comment-203.77.246.83-20131017093751/@comment-17.115.170.51-20131018200557

You can win them through events by placing in certian tiers or earning Ultimate Grabs and try your luck. I've gotten 2 Ultras and 1 Epic in the past 3 events just from the grabs! Other junk like Specials of course but yes it is possible.