Collective Voyage + Minds Aglow I quite dislike the join forces mechanic in general, though I find Collective Voyage to be the real offender given how quickly it accelerates games out of control
What if they looked a little bit more metallic
Add to this the ability to barter with customers who want to sell or trade, host playing tournaments in your shop, and set up events around certain cards and card types, and you have a living, breathing storefront
Also consider how quickly you can station it
Liliana and Chandra acting like wacky siblings, complete with Liliana cutting off Chandra's necromancer jokes
The expansion includes new Radiant Pokemon, more Pokemon VSTAR, and the return of the Lost Zone meaning there are some seriously valuable additions coming your way