does he play some form of a collectible card game or LCG? since maybe a small deckbox like this Xenoskin Deck Case might be useful to carry a small portion for travel play or something
I have an Edgar Markov deck that has several token creators (other than himself), so I have to have a good bit of tokens for when it really pops off - I also keep a handful of other cards to swap out whenever I'm feeling like it. That said, I use the Ultimate Guard 200 twin Flip 'N' Tray Deck case. It does a great job of holding the 99 in one side and then my tokens, other cards, and commander on the other with dice in the center. Works perfectly for me and seems like it might be a good fit for your Werewolves. The price is a bit steep for a deck box @ $35-ish, but I've been very happy with it. Hope this helps!
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On another note, how do you like your Werewolf deck? I got Tovolar as my pre-release card for MID and have been itching to build a Werewolf tribal deck with him at the helm.
So if this fits 200+ regular sized cards does that mean i could fit 400+ mini us cards in here?
I use the Ultimate Guard Twin Flip 'n' Tray and each of the two trays can comfortably hold 2 sleeved Blitz decks with equipment, tokens, and a few extra cards pretty comfortably. I use Ultra Pro dividers because they fit perfectly into the trays without hindering them from sliding back into the main case.
Case (lots of colors on Amazon):
https://www.amazon.com/Ultimate-Guard-Card-Xenoskin-Black/dp/B016CWIEMK
Dividers (not sure if these are the same size as mine appear to be discontinued):
You can essentially carry 4 Blitz decks with these; here are some pics of mine.
Hope this helps!