Bane Alley Broker

Even if not all players can look at the exiled cards, each card’s owner is still known. It is advisable to keep cards owned by different players in distinct piles in case another player gains control of Bane Alley Broker and exiles one or more cards with it.

If Bane Alley Broker leaves the battlefield, the cards exiled with it will be exiled indefinitely. If it later returns to the battlefield, it will be a new object with no connection to the cards exiled with it in its previous existence. You won’t be able to use the “new” Bane Alley Broker to return cards exiled with the “old” one.

Bane Alley Broker’s second and third abilities apply to cards exiled with that specific Bane Alley Broker, not any other creature named Bane Alley Broker. You should keep cards exiled by different Bane Alley Brokers separate.