Wildshape Mastery

This ability comes from long years of training or learning from a wildshape master. This feature includes higher CR forms being able to be taken, improved spell casting through wild shape, and some expanded form lists.

 Starting at level 2, you can use your Wild Shape to transform into a beast. You ignore the CR Max. However, you must abide by the other limitations that are on the CR table. The CR you can transform into is equal to half your level, rounded down.

 At level 6, you are given the choice of taking Fey, Elemental, or Monstrosity (non-humanoid creature for Monstrosity Choice).

 At level 8, you can increase the CR by half your proficiency level.

 At level 14, you take another option from the earlier list or take another type based on your subclass.

 Moon: Aberration

Spores: Undead

Wildfire: Fiend

Land: Non-legendary dragons and dragon kin

Stars: Celestial

Shepherd: Fey

Dreams: Fey

Other circles will be determined later by updates or you dm for homebrew.

 At level 16, you have nearly mastered your wild form. To determine CR, add Level plus your Wisdom. Circle of the Moon druids double their Wisdom score.