you can fly (Hover) 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 Gravity breath as your main ranged weapon and bite weapons as your main weapons.

note: equip (A.H.C) Gravity Breath as your permanent ranged weapon; equip (A.H.C.) Normal Bite or (A.H.C.) Big Bite as your permanent main melee weapon.

you are resistant to force damage.

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

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

you are vulnerable to Radiant Damage.

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

you can use either Blink or dispel magic three times per long rest:

Blink:

use 1 action to roll a 1d6 at the end of your turn for one minute. On a roll of 4–6, you vanish from your current plane of existence and appear in the Ethereal Plane (the spell ends instantly if you are already on that plane). While on the Ethereal Plane, you can perceive the plane you left, which is cast in shades of gray, but you can’t see anything there more than 60 feet away. You can affect and be affected only by other creatures on the Ethereal Plane, and creatures on the other plane can’t perceive you unless they have a special ability that lets them perceive things on the Ethereal Plane.

You return to the other plane at the start of your next turn and when the spell ends at one minute, if you are on the Ethereal Plane. You return to an unoccupied space of your choice that you can see within 10 feet of the space you left. If no unoccupied space is available within that range, you appear in the nearest unoccupied space.

Dispel Magic:

use an action to choose one creature, object, or magical effect within 120 feet. Any ongoing spell of level 3 or lower on the target ends. For each ongoing spell of level 4 or higher on the target, make an ability check using your spellcasting ability (DC 10 plus your strength modifier). On a successful check, the spell ends.

Psychic Step. as a bonus action, you can magically teleport to an unoccupied space you can see within 60 feet of you.

you can use Singularity Breath as an alternate attack to gravity breath.

note: to use Singularity Breath, equip (A.H.C.) Singularity Breath

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 Crystal as a second Alternate attack for Gravity Breath:

Note: Explosive Crystal is used by equipping (A.H.C.) Explosive Crystal.

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 only Shapeshift or Protection From Evil And Good three times per day,

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.

Protection From Evil And Good:

using 1 action, for 10 minutes, one willing creature you touch is protected against creatures that are Aberrations, Celestials, Elementals, Fey, Fiends, or Undead. The protection grants several benefits. Creatures of those types have Disadvantage on attack rolls against the target. The target also can’t be possessed by or gain the charmed or frightened conditions from them. If the target is already possessed, charmed, or frightened by such a creature, the target has Advantage on any new saving throw against the relevant effect.

you can breathe air and water.

you can use sending, two times per long rest,

Sending:

as 1 action, you send a short message of 25 words or fewer to a creature you have met or a creature described to you by someone who has met it. The target hears the message in its mind, recognizes you as the sender if it knows you, and can answer in a like manner immediately. The spell enables targets to understand the meaning of your message.

You can send the message across any distance and even to other planes of existence, but if the target is on a different plane than you, there is a 5 percent chance that the message doesn’t arrive. You know if the delivery fails.

Upon receiving your message, a creature can block your ability to reach it again with this spell for 8 hours. If you try to send another message during that time, you learn that you are blocked, and the spell fails.

you have Telepathy up to 30 feet.

Telepathy:

You create a telepathic link between yourself and a willing creature with which you are familiar. The creature can be anywhere on the same plane of existence as you. The spell ends if you or the target are no longer on the same plane.

Until you want the spell to end, you and the target can instantly share words, images, sounds, and other sensory messages with each other through the link, and the target recognizes you as the creature it is communicating with. The spell enables a creature to understand the meaning of your words and any sensory messages you send to it.

you are resistant to psychic damage.

you can use Control Water once per long rest.

Control water:

as 1 action but for 10 minutes, you control any water inside an area you choose that is a cube up to 100 feet on a side, using one of the following effects. As a magic 

action on your later turns, you can repeat the same effect or choose a different one.

Flood. You cause the water level of all standing water in the area to rise by as much as 20 feet. If you choose an area in a large body of water, you instead create a 20-foot tall wave that travels from one side of the area to the other and then crashes. Any Huge or smaller vehicles in the wave’s path are carried with it to the other side. Any Huge or smaller vehicles struck by the wave have a 25 percent chance of capsizing.

The water level remains elevated until the spell ends or you choose a different effect. If this effect produced a wave, the wave repeats on the start of your next turn while the flood effect lasts.

Part Water. You part water in the area and create a trench. The trench extends across the spell’s area, and the separated water forms a wall to either side. The trench remains until the spell ends or you choose a different effect. The water then slowly fills in the trench over the course of the next round until the normal water level is restored.

Redirect Flow. You cause flowing water in the area to move in a direction you choose, even if the water has to flow over obstacles, up walls, or in other unlikely directions. The water in the area moves as you direct it, but once it moves beyond the spell’s area, it resumes its flow based on the terrain. The water continues to move in the direction you chose until the spell ends or you choose a different effect.

Whirlpool. You cause a whirlpool to form in the center of the area, which must be at least 50 feet square and 25 feet deep. The whirlpool lasts until you choose a different effect or the spell ends. The whirlpool is 5 feet wide at the base, up to 50 feet wide at the top, and 25 feet tall. Any creature in the water and within 25 feet of the whirlpool is pulled 10 feet toward it. When a creature enters the whirlpool for the first time on a turn or ends its turn there, it makes a Strength saving throw. On a failed save, the creature takes 2d8 Bludgeoning damage. On a successful save, the creature takes half as much damage. A creature can swim away from the whirlpool only if it first takes an action to pull away and succeeds on a Strength (athletics) check against your spell save dc (Strength Save).