2023-11-10 : Any enters-the-battlefield abilities of the copied land card will trigger when Echoing Deeps enters the battlefield. Any "as [this land] enters the battlefield" or "[this land] enters the battlefield with" abilities of the chosen land card will also work.

2023-11-10 : Echoing Deeps copies exactly what was printed on the original land card, with the noted exception.

2023-11-10 : If you choose to have Echoing Deeps not copy anything, it enters the battlefield untapped.