|This spell finds a forested plane and forcefully intersects it with this world; however, it requires open space to succeed. While the spell holds, some of its terrain and spirit inhabitants may be trapped here.|
Summon Forest summons a section of forest with a friendly dryad in the caster's LOS, occasionally with a small pond in the center. The size and density of the forest depends on the caster's spell power. This spell requires a certain amount of space around the caster to function. Nearby walls may be replaced by trees; should any of the trees be destroyed, the walls they replaced will not return.
Summon Forest was added in 0.14.