Are Face-up Barriers still considered to be "in the deck"? More specifically:
1) If you shuffle a deck with face-up barrier on top, does it get shuffled in face-up (a la Ambuscade from Sentinels of the Multiverse)? Or do you shuffle the rest of the deck, and put the Barrier back on top?
2a) If something lets you examine the top card of the deck, does it look at the face-up barrier, or the card beneath it?
2b) If something looks at the top N cards and lets you rearrange the order, can you move the face-up barrier under face-down cards?
3) If there are no face-down cards in a location, but there is still a face-up barrier, can you attempt to close the location?