His ability text reads as follows:
While Apocalypse is active, when you could use a Global Ability, you may pay bolt/mask and field Sidekicks from your Used Pile and bag until you have 4 Sidekicks in the Field Zone.
If I use Apocalypse's ability and I have sidekicks in both my Used Pile and my bag, do I get to choose where to field sidekicks from (i.e. could I field sidekicks exclusively from my bag), or do I have to field sidekicks from my Used Pile first before going to the bag?
Thank you for your time.