Astra's Hut

When you complete the spell, roots, limbs, and branches grow from the earth and from plant life around you over the course of 2 minutes to form a 8' radius half sphere that surrounds you on all sides and overhead. The dome will be proof against inclement weather, and will include a small entry portal under the plant wall, and small smokehole if they are desired.  The interior will warm up by 20 degrees, or cool by 20 degrees, depending on what is desired. The hut will stand up to most forms of severe weather such as a blizzard or a hurricane.  The plant wall is susceptible to slashing damage, as well as fire and cold-based attacks.  The hut has an AC of 16 and 100 hit points before it will begin to fail.  

The hut will have a functioning door that is just large enough for small or medium sized creatures to enter or exit the hut. Nine creatures of Medium size or smaller can fit inside the dome in addition to the caster. Without alternate lighting when the door is closed, the interior of the hut will be darkened and shadowy, with only enough light to see others as shadows.

If an attempt is made to create a second hut within fifty feet of the first, the second casting will absorb (destroy) the prior casting.  The spell will fail if there is no plant growth in the area around the caster (i.e. desert, ice, a rocky cliff or cave).  

At the end of eight hours, the hut will begin to wilt and dry out.  Depending on what type of plant life the hut is created from, it may take several hours (grass) or several months (trees) before it is reclaimed by the surrounding environment.