Bower

 When a Druid or Ranger casts this spell a simple, lean-to like structure grows up from the ground to provide basic shelter. The level of protection from the natural elements as well as the capacity of the bower depend on the spell caster's level. This spell must be cast upon living ground. Any natural ground including untouched bedrock will work. It will not work inside of towns, cities, or any other areas of developed land (although an orchard may work if it is old enough). It will also not work underground or in caves.

At levels 1 though 5, when the spell caster casts this spell a simple bower will appear. It will hold up to four medium sized creatures and withstand the same weather conditions as a basic lean to.

At levels 6 though 10, when the spell caster casts this spell, the bower will hold up to 8 medium creatures and withstand non magical storms while keeping the occupants dry.

At levels 11 through 15 when the spell caster casts this spell, the bower will hold up to 8 medium sized creatures, withstand non magical storms while keep the occupants dry and maintain a safe, comfortable temperature inside. A fire may be built for cooking and the smoke will magically dissipate.

At levels 16 though 20 when the spell caster casts this spell, the bower will hold up to 12 medium sized creatures, withstand all storms up to hurricane strength while keeping the occupants dry, maintain a safe, comfortable temperature inside, and is now immune to fire. A fire may be built for cooking and the smoke will magically dissipate.