I emailed Mesanna several months ago about this very thing. She informed me that she would not be adding this type of thing to other shards. The Hole that goes directly to Navrey was an event item that an EM forgot to lock down. It was never meant to be a lasting item in game.
Actually, the "Hole" was not obtained during an "event" but rather at the release of Stygian Abyss. If you happen to notice when entering Navery's lair now, you will see two square sections that highlight, "hole" When Stygian Abyss was released, we all ran through and obtained what we could, stealable's/server birth rares! and these "holes" were just picked up/2 per shard. We found out later, the holes were never meant to be obtained and had been forgotten to be locked down, this is how they were taken.
Once this was discovered some of the players who had these holes were strongly encouraged to turn these items in to their Em or Gm and if discovered in game, would risk them being retrieved, as they were illegal !! There are few that exist today, as some players did turn theirs in as instructed. Others did hang on to them, which now it appears they are worth a small fortune and for some reason, no longer illegal to own?......