Avatar of Nature

What works in tree form

 * Two Weapon Fighting feats: You will hit twice.
 * Doublestrike from Shield Mastery: It still applies in form and works together with TWF.
 * Cleaves: Cleave, Great Cleave, Whirlwind Attack, Alpha Strike, etc.
 * Unarmed special attacks: the monk ones, for instance, work.
 * Action Boosts
 * Weapons: The effects of the weapons will carry on.
 * Consecration: You can cast it while in Tree form.
 * Stalwart Defense/Sacred Defence: You keep the bonus.
 * Spells previously cast: If you have something going on already, it will remain. For instance, Regenerate or Vigor to heal yourself.
 * Unarmed attack speed from monk levels contributes to a faster hitting tree.

What does not work in tree form

 * Benefits from Animal Forms: you lose your animal form bonus and all the feats (such as Natural Fighting) associated to them.