You grow a pair of wings, granting a flying speed of 50 feet.
Your wings require at least a 20 foot radius of free space to
fly.

You possess a row of sharp teeth and powerful claws which
can replace your unarmed strikes, dealing 1d6 + your
Strength modifier slashing (claws) or piercing (bite)
damage.

This transformation lasts for 10 minutes or until you end it as
an action. Once you use this trait, you can't use it again until
you finish a long rest.

As a dragon you gain the following features:

Size
Your size becomes large, and your weight is quadrupled. If
there isn't enough room for you to increase your size, you
must immediately activate the Adaptability trait (described
below).
Wings
You grow a pair of wings, granting a flying speed of 50 feet.
Your wings require at least a 20 foot radius of free space to
fly.
Natural Weapons
You possess a row of sharp teeth and powerful claws which
can replace your unarmed strikes, dealing 1d6 + your
Strength modifier slashing (claws) or piercing (bite)
damage.
Natural Focus
You can cast spells without requiring a focus.
Natural Armor & Equipment
You choose whether your equipment falls to the ground in
your space, merges into your dragon form, or is worn by it.
Worn equipment functions as normal, but the DM decides
whether it is practical for the dragon form to wear a piece of
equipment, based on the size.
If you are not wearing armor, your AC becomes 13 + your
dexterity modifier.
Breath Weapon
You can unleash your Elemental Surge originating from you
and cause creatures within range to make a Dexterity saving
throw. The DC for this save equals 8 + your Constitution
modifier + your proficiency bonus.
A creature takes 2d6 damage on a failed save, and half as
much damage on a successful one. The damage increases to
3d6 at 6th level, and 4d6 at 11th level.
You can unleash your breath weapon a number of times equal
to half your level (rounded up) each time you transform.
Adaptability
You can choose not to fully transform into a dragon before
activating your Dragon Form trait.
If you do so, your size doesn't change, you don't gain natural
armor, and you continue to appear mostly as your
untransformed self.
All other features from transforming, such as your wings,
natural weapons, natural focus, and breath weapon still
apply. Your fingers become claws, your teeth sharpen, and a
pair of wings stretch out from your back that require at least
a 5 foot radius of free space to fly.

You can retract or extend a pair of horns or a tail from your
body anytime during your turns. Damage dealt to these
cosmetics can damage them but deal no damage to you.
Broken cosmetics are repaired at the end of every long rest.

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 most color in darkness, only shades of whatever
color your eyes are.

Your Strength score increases by 2, and your Charisma score increases by 1.

Dragonlings age both physically and mentally slower
than humans. They reach maturity at 100 and can live
to be more than 1000 years old, showing little signs of
weakness or fatigue. Death to aging can take a
dragonling when they least expect it.

Dragonlings tend to let their emotional state decide their
alignment. A boiling mix of feelings swirls into chaos, while a
simmer can lead towards neutrality. Most dragonlings
struggle with the concept of lawfulness but can adapt if
necessary and given enough time.

Your size becomes large, and your weight is quadrupled. If
there isn't enough room for you to increase your size, you
must immediately activate the Adaptability trait (described
below).

A destructive well of energy dwells within your core. Choose
a damage type (fire, cold, acid, poison, lightning, thunder) and
either a 15 foot cone or a 30 foot line as the area of effect.

Elemental Surge

A creature takes 2d6 damage on a failed save, and half as
much damage on a successful one. The damage increases to
3d6 at 6th level, and 4d6 at 11th level.
You can unleash your breath weapon a number of times equal
to half your level (rounded up) each time you transform.

You choose whether your equipment falls to the ground in
your space, merges into your dragon form, or is worn by it.
Worn equipment functions as normal, but the DM decides
whether it is practical for the dragon form to wear a piece of
equipment, based on the size.
If you are not wearing armor, your AC becomes 13 + your
dexterity modifier.

Your creature type is dragon, rather than humanoid. While
not in your dragon form, you are nearly indistinguishable
from a human. You can speak, read, and write Common and
Draconic.