Auntie Niandret's Traveling Lair

When this circular tent is assembled, the interior cloth curtains between the front half of the tent and the back becomes a permanent portal to the night hag, Auntie Niandret's lair. Up to 3 creatures can be attuned at once. 

The tent is a circular, pointed roof tent, 20 feet in diameter. Its interior is divided into two halves, with a pair of curtains running across the center.  The portal within the curtains opens only at your command, which you can speak as a bonus action. Once opened, the portal remains open until the command word is spoken again to close it.  It is immune to the knock spell and similar magic, such as that of a chime of opening. When the portal is closed, the curtain acts as mundane and the back half of the tent is accessible through it.

The tent is made of magic imbued cloth, and its magic prevents wind, rain, heat and cold from penetrating when the front flaps are secured. The roof, the interior curtains, and the walls each have 50 hit points and resistance to all damage. A wish spell can repair the tent (this use of the spell counts as replicating a spell of 8th level or lower). Each casting of wish causes the roof, the curtain, or tent walls to regain 50 hit points. Alternately, 1 hour of casting mending will repair 1 hit point of damage.

If any piece of the tent is reduced to 0 hit points, that piece is destroyed and will take double the hours of mending to repair and will not function until restored to full hit points. The portal curtain exists and shows damage on both sides of the portal. Repairing from either side will repair the portal.

Notes: Utility, Warding