Moonstone Dragon (E), which is short for Moonstone Dragon Evolution, is a sub class where the eventually added moonstone dragon species traits and abilities are added to a player's moonstone dragon character (works well with the Moonstone Dragon species i created and the Moonstone Dragon Advisor background i created.).

Note 1: you will become a adult Moonstone dragon eventually with the stats and abilities of an adult moonstone dragon.

Note 2: use optional feature manager to get new abilities and increase your size over time.

Level 3: Dragon Bite (level 1)

bite. +5 to hit, reach 10 ft., 1 target. on hit (2d8) piercing damage plus 3 (1d6) radiant damage.

Level 3: dragon bite bonus (Level 1)

(1d6) radiant damage added to bite (level 1) attack after Bite (level 1 attack)

Level 3: Dream Breath (level 1)

you exhale mist in a 90-foot cone. Each creature in that area must succeed on a DC 15 Constitution saving throw or fall unconscious for 10 minutes. This effect ends for a creature if the creature takes damage or someone uses an action to wake it. (to use: recharge on a 5 or 6 of a d6 roll; can only use moonlight breath or dream breath per recharge)

Level 7: Moonlight Breath (level 1)

The dragon exhales a beam of moonlight in a 30-foot line that is 5 feet wide. Each creature in that area must make a DC 12 Dexterity saving throw, taking (4d6) radiant damage on a failed save, or half as much damage on a successful one. (to use: recharge on a 5 or 6 of a d6 roll; can only use moonlight breath or dream breath per recharge)

Level 7: evolution 1

now you are a Moonstone Dragon Wyrmling. set your STR base stat, DEX base stat, CON base stat, INT base stat, CHA base stat, AC, skills, senses, saving throw stats, and max health to what the Moonstone Dragon Wyrmling (located in D&D Beyond monster index) has.

Level 10: Evolution 2

now you are a young moonstone dragon. set your STR base stat, DEX base stat, CON base stat, INT base stat, CHA base stat, AC, skills, senses, saving throw stats, and max health to what the young Moonstone Dragon has.

Level 10: Growth Spurt 1

your character's size is now permanently large.

Level 10: sylvan proficient

you can now speak, read, and write sylvan proficiently

Level 10: Scratch attack (Level 1)

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. on hit: (2d6) slashing damage.

Level 15: calm emotions (level 1)

Spellcasting. The dragon casts calm emotions, requiring no material components and using Charisma as the spellcasting ability (spell save DC 15): 1/day each: calm emotions.

calm emotions. Each Humanoid in a 20-foot-radius sphere centered on a point you choose within range must succeed on a Charisma saving throw or be affected by one of the following effects (choose for each creature):

 

• The creature has Immunity to the charmed and frightened conditions until the spell ends. If the creature was already Charmed or Frightened, those conditions are suppressed for the duration.
• The creature becomes indifferent about creatures of your choice that it’s hostile toward. This indifference ends if the target takes damage or witnesses its allies taking damage. When the spell ends, the creature’s attitude returns to normal.

Note: one use per day only; spell duration: 1 minute

 

Level 15: Faerie Fire (level 1)

Spellcasting. you can cast faerie fire, requiring no material components and using Charisma as the spellcasting ability (spell save DC 15): 1/day each: faerie fire.

faerie fire. Objects in a 20-foot cube within range are outlined in blue, green, or violet light (your choice). Each creature in the Cube is also outlined if it fails a Dexterity saving throw. For the duration, objects and affected creatures shed dim light in a 10-foot radius and can’t benefit from the invisible condition.

Attack rolls against an affected creature or object have Advantage if the attacker can see it.

Note: one use per day only; spell duration: 1 minute

Level 18: Evolution 3

you have become a adult moonstone dragon. make your character's darkvision, blindsight, passive perception, max heath, base unarmoured AC, STR base stat, DEX base stat, CON base stat, INT base Stat, WIS base stat, and CHA base stat the same as a adult moonstone dragon's.

Level 18: Tail Whip attack (level 1)

Tail. Melee Weapon Attack: +10 to hit, reach 15 ft., one target. Hit: (1d8) bludgeoning damage. If the target is a creature, it must succeed on a DC 18 Strength saving throw or be knocked prone.

Level 18: Invisibility (Level 1)

Spellcasting. You cast Invisibility, requiring no material components and using Charisma as the spellcasting ability (spell save DC 19):

invisibility. A creature you touch has the invisible condition until the spell ends. The spell ends early immediately after the target makes an attack roll, deals damage, or casts a spell.

Note: one use per day only; works for 1 hour only

Level 18: Revivify (level 1)

Spellcasting. you cast Revivify, requiring no material components and using Charisma as the spellcasting ability (spell save DC 19):

You touch a creature that has died within the last minute. That creature revives with 1 Hit Point. This spell can’t revive a creature that has died of old age, nor does it restore any missing body parts.

Level 18: Legendary Resistance

If you fail a saving throw, you can choose to succeed instead.

(note: only 3 uses per day)

Level 18: Elvish Proficient

you are proficient in speaking, writing, and reading Elvish.

Level 18: Gnomish Proficient

you are proficient in speaking, writing, and reading Gnomish.