The charm on this amulet is not just any charm, it is rumored to be made directly from the wood of the world tree itself. Many druids believed it to be too powerful to control; some didn't even believe it existed. The power it offers to the one who wears is makes them nothing short than a living force of nature.

The heart boosts the power of magic derived from nature. While attuned, you gain a +3 bonus to your druid spell save DC and spell attack rolls. Additionally, it may be used as a spellcasting focus for druid spells.

Wisdom of the World Tree. While attuned to the heart, you gain an innate understanding of the world around you. You gain +2 wisdom; max 24. Additionally, you can bestow your understanding upon allies when needed. A number of times per day equal to your wisdom modifier, whenever a creature within 30 feet of you makes an ability check or saving throw, you can use your reaction to add your wisdom modifier to the total.

Nature's Attunement. Upon attuning to the heart, you become partially attuned to nature itself. Choose one of the following creature types: Elemental, Dragon, Fey, Monstrosity, Plant, Wyvern (if choosing wyvern, you must additional select which type of wyvern; intended for use with the Monster Hunter Monster Manual); once per day, you can wild shape into a creature of your chosen type. Additionally, when you finish a long rest, you may change the chosen creature type.

Natural Remedies. You gain exceptional control over the healing power of nature. You may add your 2 x your proficiency bonus to rolls for healing. Additionally, your connection to nature allows you to cast both the heal spell and the greater restoration spell as rituals whenever you are in a location with a good amount of flora. Furthermore, ay healing potions you make from gathered herbs are magically enhanced to superior quality. Finally, you are able to tap into a wellspring of hit points equal to your druid level * 18 that replenishes on a long rest. As an action on your turn, you can target a number of creatures equal to your wisdom modifier within 60 feet of you to distribute hit points to from your health pool. Additionally, your knowledge of healing adds Power Word: Heal to your spell list.

Yggdrasil's Mercy. Whenever an ally is knocked unconscious within 30 feet of you, you can use your reaction to simply will nature itself to aid them. When you do so, they immediately regain consciousness with 1 hit point as well as temporary hit points equal to 3 x your druid level that fade at the beginning of your next turn. Each time you use this reaction, you gain a level of exhaustion.

Shifting Flow. The energy of the heart flows differently depending on the form the wearer takes, providing boons that vary between wild shape and human form.

• Wild Shape. Whilst in wild shape, you gain the following benefits.
  • You gain a bonus to AC equal to your wisdom modifier
  • Your natural weapon attacks gain a +2 to attack and damage rolls.
  • You have resistance to nonmagical bludgeoning, piercing, and slashing damage.
  • You can telepathically communicate with all allied creatures while you are in wild shape.
  • If you are in the wild shape of your selected creature type from Nature's Attunement, the attack and damage bonus increases to +3 and you become resistant to acid and poison damage.
• Humanoid Form. Whilst in your normal humanoid form, you gain the following benefits.
  
  • You can expend a druid spell slot of 3rd level or higher as a bonus action to restore one use of your wild shape feature.
  • You gain a bonus of 1d4 to all wisdom based ability checks (your passive perception increases by 2 from this feature).
  • You can navigate thick forests with no issue and ignore all forest difficult terrain (include that created by spike growth and similar spells)..
  • You may add your proficiency bonus to all damage rolls dealt by druid spells.
  • You regain 5 hit points at the start of your turns as long as you have at least 1 hit point. 

Notes: circle of the moon druid