The World of Temmuren
Manual of the Moon
Wondrous item, rare (requires attunement)
Written in an ancient language, indecipherable except under moonlight. Careful study each night and carrying it on ones person provides advantage on Intelligence (Nature) checks to know about creatures.
Additionally, an attuned druid may use wild shape to change between forms without ending the effect or using additional uses as long as duration and temporary hit points have not expired. Increase or decrease the current temporary hit points from wild shape by the difference between old and new forms. (changing to a form with more hp increases temporary hit points, changing to one with lower hit points reduces temporary hit points) If this would reduce temporary hit points to 0, the new form cannot be assumed.