A 15-foot-radius immobile dome of amber springs into existence around and above you and remains stationary for the duration. The spell ends if you leave the area.    The amber can fit up to twelve Medium or smaller creatures inside of it. The spell fails if its area includes a larger creature or more than twelve creatures. Only creatures you designate can enter the dome through an entrance in one of the dome’s walls. All other creatures are barred from entering the amber dome. Spells and other magical effects can’t extend through the amber or be cast through it. The atmosphere inside the amber is comfortable and dry, regardless of the weather outside. The interior is dimly lit in a soft, amber glow. The amber is opaque from the outside, but it is transparent from the inside.    A creature that remains in the amber for its full duration gains the benefits of a short rest, and it can’t be affected by this spell again until it finishes a long rest.