I have procured a Wolverine Days of Future Past costume after 619 (probably a lot more, but I started keeping track of drops 619 cards ago) Mk-1 cube shard fortune cards.
I was super excited this morning, and even though it is an older costume I'm really happy with the way it looks. There are a fair number of Wolverine costumes, but for whatever reason none of them appealed to me as much as this one.
Thank you Gaz though for making the costume, and for giving us a way to get free boosts and a chance at free costumes. I also picked up the Cap and Iron Man costumes in this quest.
Now that I've accomplished my goal... I guess I'll just enjoy running around in this game fighting whomever I please without the need to hoard cube shards.