Your Charisma score increases by 1, your Dexterity score increases by 1, and a score of your choice increases by 1.

Elderglimmers are ageless, existing outside the normal flow of time. They mature at the equivalent of 30 years old in human terms but do not age thereafter.

Elderglimmers vary in size at any given point in time. Your size is medium. You can cast Enlarge/Reduce for free at any time.

Your base walking speed is 30 feet.

You have Darkvision with a range of 60 feet. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

You can speak, read, and write Common and one extra language of your choice. Elderglimmers often learn languages tied to the cultures they influence.

The true form of the Elderglimmer is an incomprehensible, ever-shifting entity. When observed, an Elderglimmer can appear as any creature, combination of creatures, or even an object, adapting its form based on its current emotional aspect.

• Fearweaver: The form becomes more disturbing and unsettling.
• Joybringer: The form becomes more pleasant and inviting.

The Elderglimmer can alter its appearance at will, from subtle modifications to complete transformations. Regardless of its visual representation, its statistics remain unchanged.

You have advantage on Wisdom (Insight) and Charisma (Persuasion) checks when interacting with creatures whose emotions are influenced by your Emotion Manipulation feature.

As an action, you can use your shapeshifting ability to alter yourself into another creature. 

You turn into another kind of creature, the new form can be any kind you choose whose challenge rating is equal to or less than your level. Your game statistics, including mental ability scores, are replaced by the statistics of the new form. You retain your alignment and personality.

You assume the hit points of your new form divided by 4 rounded up to the nearest whole number, and when you revert to your normal form, you return to the number of hit points you had before you transformed. If you revert as a result of dropping to 0 hit points, any excess damage carries over to your normal form. As long as the excess damage doesn't reduce your normal form to 0 hit points, you are not knocked unconscious.

You are limited in the actions you can perform by the nature of its new form, and it can't speak, cast spells, or take any other action that requires hands or speech unless its new form is capable of such actions. The only exception to this are your emotional manipulation skills.

Your gear melds into the new form. You can't activate, use, wield, or otherwise benefit from any of its equipment.

You may use Glimmer Shift (x) times per combat. (x) being your level - the CR of any creatures you have shapeshifted into this combat.
If you revert as a result of dropping to 0 hit points you cannot Glimmer Shift into that creature again this combat. 
If you revert as a result of an action it still expends the CR.
Once you deplete the CR pool you are stuck in your normal form until combat ends.

Example:

You are level 2. In the entire combat you use Glimmer shift to transform into the following creatures.
Blink Dog - CR 1/4
Ash Zombie - CR 1/4
Dretch - CR 1/4
Flying Sword - CR 1/4
Dire Wolf - CR 1
(1/4 x 4) + 1 = 2

As an Elderglimmer, you can attune to one of several emotional states, each granting unique abilities. You can choose from the following Emotional Focuses: Fearweaver or Joybringer. Your chosen focus affects your abilities and interactions.

• Fearweaver: Embraces fear to instill terror in others.
  
  • Nightmare Visage: You constantly radiate an aura of fear in a 10-foot radius around you. Any Hostile creatures that enter this radius must make a Opposed check (you both roll a d20, They add their Wisdom bonus you add your current forms Charisma plus your Intimidation bonus). On a failure, the creature is frightened of you for 1 minute. A frightened target can repeat the check at the end of each of its turns, ending the frightened effect on itself on a success. Any Hostile non-frightened creature in the radius of the aura must make their check at the beginning of their turn even if they have previously defeated it. 
  • Menacing Grin:  As a bonus action, you can project a terrifying glare at a Hostile creature within 30 feet of you. The target must succeed on a Wisdom saving throw (DC = 8 + your proficiency bonus + your Charisma modifier) or be paralyzed with fear for 1 minute. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. Creatures that are normally immune to the paralyzed condition are not immune to this effect. You can use this feature a number of times equal to your proficiency bonus per long rest.
• Joybringer: Spreads happiness to uplift and charm allies.
  
  • Aura of Cheer: You constantly radiate an aura of joy in a 10-foot radius around you. Non-Hostile creatures within the aura have advantage on saving throws against being frightened or charmed.
  • Radiant Smile: As a bonus action, you can project a warm, comforting aura from yourself. Non-Hostile creatures within 10 feet of you gain temporary hit points equal to your Charisma modifier + your proficiency bonus. Allies may only take advantage of this feature a number of times equal to your proficiency bonus per short rest.

You select your Emotional Focus from Fearweaver (instills terror) or Joybringer (uplifts and charms allies) at any time, and it can change as needed.

When you successfully influence others with your Emotion Manipulation abilities, you regain hit points equal to the number of creatures affected. You can use this feature a number of times equal to your proficiency bonus per long rest.