+2 INT , +1 DEX

Children of Guinevere are always proficient in Intelligence.

Inversely, Children of Guinevere take disadvantage on raw Strength rolls. (Athletics doesn't take debuff, damage ratios remain the same.)

Gaining Proficiency in Strength by any means removes the disadvantage, but does not grant proficiency in Strength.

You have advantage on saving throws against being charmed, and magic can’t put you to sleep.

Elves don’t need to sleep. Instead, they meditate deeply, remaining semiconscious, for 4 hours a day. (The Common word for such meditation is “trance.”) While meditating, you can dream after a fashion; such dreams are actually mental exercises that have become reflexive through years of practice. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep.

Permanent "mage hand". This psychic force's strength score is calculated as: [(Psy Palm's Strength : Vorel's Intelligence) {( 1/4 : 1 at 1st Lvl), to ( 1/2 : 1 at 4th Lvl), to ( 1 : 1 at 8th Lvl), to ( 1 & 1/2 : 1 at 12th Lvl), to ( 2 : 1 at 16th Lvl), to ( 3 : 1 at 20th Lvl)}]. To a distance of 30ft, increasing to 60ft. at 10th level.

This is a psychic effect. With training, this effect can increase in strength and distance by DM discretion. This can also work inversely, if the ability is neglected. This should take the course of at least a month, either way.

Starting at third level, you can strike with the psychic palm for 1d4+Int Force Damage, using your intelligence modifier to hit. Every three levels, this ability increases in damage by one die. Every 6 levels, the damage die is increased by one category. (1d4 at 3rd, 2d4 at 6th, 3d6 at 9th, 4d6 at 12th, 5d8 at 15th, 6d8 at 18th.)
Upon reaching 10HD, the Child of Guinevere gains the ability to cast Bigby's Hand to empower their Psychic Palm. They do not need components to cast this spell. This is a Psychic, telekinetically based Effect. They may do this Int Mod times per short or long rest. After empowering your Psychic hand in this manner, it once again requires an action to use.

A telekinetic tendril that grows out of a Child of Guinevere's back, from their heart.

(I apologize if the description is wordy, I was doing my best to balance this to a reasonable level for party play.)

(Brief Description for strength ratio: If a level 1 Vorel with 18 Int uses their Psychic Palm, it effectively has a strength score of 4. This is SOLELY for purposes of lifting/restraining objects. At level 4, a Vorel with 18 int has a psychic palm with 9 Str. At 8th level, this would be 18. At 12th this would be 27. As most characters are not expected to make it to level 20, this should not be a problem, and realistically should only affect carry weight. Damage done while restraining someone is based off of your damage die.)

You gain resistance to Psychic Damage OR Force Damage.

This effect replaces the damage resistance gained by Draconic Ancestry.

+2 STR , +1 CON

You gain proficiency in either Acrobatics or Athletics.

Able to breathe on land and in water. Swimming speed 30ft.

The Vorel exhales repulsion energy in a 30 ft. line. Each creature in that area must succeed on a DC (12+ Vorel's Con Mod+Prof.). On a failed save, the target is pushed 20 ft away from the Vorel. Uses are shared with Lightning Breath.

As something closer to a Half-Dragon than a dragonborn, you have access to a little bit more of the power in your blood. You can use your breath weapon to shift the polarity someone's magnetism away from yourself, effectively pulling them away from you.

(Not sure if the effect is magnetism or not, but it fits with electrical themes.)

Upon reaching 10HD: Ability to Change Shape to a Bronze Dragon, with a CR equal to half of your HD. This can be done 2+Con Mod times per Long Rest. One Use is recharged by Short Rest. This change lasts for 10 minutes per use, and can be ended as a full round action. This becomes faster at HD14, only taking a single action.

(This trait is subject to edit.)

+2 CHA , +2 WIS , -2 STR or CON (Or -1 on both)

You gain Resistance to Lightning Damage.

You have advantage on saving throws against being charmed.

Magical effects can still put you to sleep.

You gain Tremorsense to 20ft.

You gain Blindsight to 10ft.

The overly delicate senses of a Pureblood Vorel gives them expertise in perception, though this comes with a drawback. Any sensory overstimulation experienced by these Vorel can be debilitatingly intense to them if they are not properly prepared, causing things such as strong odors to leave them nauseated longer, or bright flashes blinding them longer, sharp sounds deafening them longer... to pay no mention to pain and pleasure.
-When taking sensory based status effects, extend the duration by 1 round. When taking damage from any source, take 1/2 your level as bonus Psychic Damage.

Due to this trait, many Pureblood Vorel commonly experience Sensory Over-stimulation in everyday life when unprotected by magical means.

Most Pureblood Vorel rely on magical trinkets and accessories to guard their ears and eyes.

The natural psychic power of the grass elves, mixed with a special bond between twins, and the mingling of Naithe's divine essence, allows these individuals to sense a persons emotions, over simply reading their thoughts. This gives them both proficiency and expertise in the skills Insight and Handle Animal. This effect is extremely difficult for a Pureblood to control, and is always active as an aura within 20 ft. of themselves.

When surrounded by larger groups, this effect can be overwhelming to a younger Vorel's senses.

-This comes with a drawback and boon: (This content may be cut at a later date if too unbalanced.)

Sheltered from Birth: If being intimidated by someone, you know when they really mean it, and the malice is overwhelming. You take disadvantage against intimidation checks if they're prepared to carry out their threats. You lose this disadvantage at HD3, as it becomes the ability 'Sense Enmity'. 

Sense Enmity allows the Pureblood to feel a persons malicious intent towards themselves, and the general direction it comes from if from an unknown source.
Up to Cha Mod (Min 1) times per long rest, know if someone harbors malicious intent towards you, intends to harm you, or is angered by your presence, within 60 ft.

The overwhelming of a Vorel's senses should only happen in clusters of 5+ highly emotional people, or about 10-15 "normally" emotional people. (Highly emotional counts as anguish, ecstasy, wrath, etc. Simpler emotions such as joy, lust, or anger count as 'normal' emotions.) (1 'Highly Emotional' person generally counts as 2.5 'Normally Emotional' people.) This estimate is for a level 1 Pureblood. I would add 3 'normally emotional' people per level, if actually scaling this, though this is at player/DM discretion.

This sense is slightly overridden by combat, though the Pureblood would be able to feel another person's fear as they lie slowly dying in a pool of blood... Your reactions to things like this are all your own though.

Upon reaching HD10, the Pureblood gains the ability to exert control over another person's emotions. They can affect a target with the effects of the following spells: (Cha mod/day)

This is a psychic, emotionally based effect. Wis Save DC: 9+Cha+Prof.

The range of these effects is equal to that of the Pureblood's Empathic Sense: 20ft.

Spell Level is equal to one-third HD. (Level 10 casts Level 3 spells, level 12 casts level 4 spells, etc.) This should be roughly equal to the progression of a paladin or ranger's spellcasting power.
-Calm Emotions
-Charm Person
-Charm Monster
-Confusion
-Fear
-Rage
-Heroism
-Sleep
-Zone of Truth