User blog comment:Isickell/Core deck case inconsistency/@comment-31598076-20190102195459

There could be the possibility, that azi dahaka's return in the future could warrant the need for a core deck case. maybe the virtual system is shut down by his power. Maybe the new buddy for bal is using a core deck case because he doesn't have access to a virtual system like others, and has to settle with an old device.

But I doubt the writers were thinking about that when they made Ace. Either way, nice spotting.