you can fly up to 30 feet of distance when in dragon form instead of using your walking speed. you cannot fly while you are in your human form.

you can use your dragon tail as if it were a hand while you are in dragon form. you cannot use your tail to grab things while you are in your human form since your human form doesn't have a tail.

you can be ridden as if you are a horse but you cannot use any movement speed other than your walking speed while being ridden.

you use Spit Attack as your main dragon breath attack and bite weapons as your main melee weapons.

note: equip (A.H.C) Spit Attack as your main dragon breath attack; equip (A.H.C.) Normal Bite or (A.H.C.) Big Bite as your main melee attack.

you are resistant to acid damage.

you can read, write, speak, and understand common.

you can read, write, speak, and understand draconic.

you are vulnerable to Fire Damage.

you cannot attack while flying unless your party's Dungeon master says otherwise..

you can use one of three slots to use either Detect Magic or Cure wounds:

Detect Magic:

For the duration, you sense the presence of magical effects within 30 feet of yourself. If you sense such effects, you can take an action to see a faint aura around any visible creature or object in the area that bears the magic, and if an effect was created by a spell, you learn the spell’s school of magic.

The spell is blocked by 1 foot of stone, dirt, or wood; 1 inch of metal; or a thin sheet of lead.

Cure Wounds:

you can take one action to breathe a healing gas that instantly gives one living creature, within 5 feet of you, a number of Hit Points equal to 2d8 plus your constitution check modifier.

as a bonus action you can move up to half your speed and then do a bite attack.

you can use Spit Rain as an alternate attack to Spit Attack.

note: to use Spit Rain, equip (A.H.C.) Spit Rain

you have blindsight up to 20 feet.

you have dark vision up to 40 feet.

you can walk or run up to 30 feet.

you can use Explosive Spit as an second alternate attack to Spit Attack.

note: to use Explosive Spit, equip (A.H.C.) Explosive Spit

unless your dungeon master states otherwise: as a pure dragon, you fear getting hurt while flying over deep places (like a ravine or the ocean.), so you stay on the ground. also, you are used to walking and running rather than flying.

you can use either Shapeshift or Minor Illusion three times per long rest.

Shapeshift:

You can take an action to shape-shift into a medium beast or humanoid form. you can stay in the new form for 1 hour or until you take a magic action to shape-shift into a different medium sized beast or humanoid form. to shapeshift into a creature, you must have seen it before and it can’t be a Construct or an Undead. your temporary new forms only have your stats and abilities but not your appearance.

minor illusion:

You create a sound or an image of an object within 30 feet from you but in a 5 foot cube that lasts for 1 minute. See the descriptions below for the effects of each. The illusion ends if you cast this spell again.

If a creature takes a study action to examine the sound or image, the creature can determine that it is an illusion with a successful Intelligence (investigation) check against your spell save DC. If a creature discerns the illusion for what it is, the illusion becomes faint to the creature.

Sound. If you create a sound, its volume can range from a whisper to a scream. It can be your voice, someone else’s voice, a lion’s roar, a beating of drums, or any other sound you choose. The sound continues unabated throughout the duration, or you can make discrete sounds at different times before the spell ends.

Image. If you create an image of an object—such as a chair, muddy footprints, or a small chest—it must be no larger than a 5-foot cube. The image can’t create sound, light, smell, or any other sensory effect. Physical interaction with the image reveals it to be an illusion, since things can pass through it.

you have a 30 foot climbing speed

you can use either only Lesser Restoration or Create Food and Water three times per long rest.

Lesser Restoration:

You touch a creature and end one condition on it: Blinded, Deafened, paralyzed, or poisoned.

Create Food and Water:

You create 20 pounds of food and 15 quarts of fresh water on the ground or in containers within range—both useful in fending off the hazards of malnutrition and dehydration. The food is bland but nourishing and looks like a food of your choice, and the water is clean. The uneaten food spoils and disintegrates into nothing after 24 hours.

you can use either Slowing Breath or Funny Joke three times per long rest.

Slowing Breath:

Slowing Breath. Constitution Saving Throw: DC 15, each creature in a 20-foot Cone. Failure: The target can’t take Reactions; its Speed is halved; and it can take either an action or a Bonus Action on its turn, not both. This effect lasts until the end of its next turn.

Funny Joke:

Funny Joke. Charisma Saving Throw: DC 15, one creature you can see within 20 feet. Failure: (1d6) Psychic damage. Until the end of its next turn, the target rolls 1d6 whenever it makes an ability check or attack roll and subtracts the number rolled from the d20 test. Failure or Success: You can’t take this action again until the start of your next turn.