Bonded Metallic Dragon Wyrmling

Amphibious. The dragon can breathe air and water.

Immunity. Each type of dragon is immune to a specific type of damage.

Brass. Fire

Bronze. Lightning

Copper. Acid

Gold. Fire

Silver. Cold

Steel. Acid

Mercury. Poison

Iron. Fire

Electrum. Lightning

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (1d10 + 3) piercing damage.

Breath Weapons (Recharge 6). The dragon uses one of the following breath weapons depending on the Dragon type:

Brass

Fire Breath. The dragon exhales fire in an 30-foot line that is 5 feet wide. Each creature in that line must make a DC 12 Dexterity saving throw, taking 14 (4d6) fire damage on a failed save, or half as much damage on a successful one.

Sleep Breath. The dragon exhales sleep gas in a 15-foot cone. Each creature in that area must succeed on a DC 12 Constitution saving throw or fall unconscious for 1 minute. This effect ends for a creature if the creature takes damage or someone uses an action to wake it.

Bronze

Lightning Breath. The dragon exhales lightning in a 30-foot line that is 5 feet wide. Each creature in that line must make a DC 12 Dexterity saving throw, taking 16 (3d10) lightning damage on a failed save, or half as much damage on a successful one.

Repulsion Breath. The dragon exhales repulsion energy in a 15-foot cone. Each creature in that area must succeed on a DC 12 Strength saving throw. On a failed save, the creature is pushed 30 feet away from the dragon.

Copper

Acid Breath. The dragon exhales acid in an 30-foot line that is 5 feet wide. Each creature in that line must make a DC 12 Dexterity saving throw, taking 18 (4d8) acid damage on a failed save, or half as much damage on a successful one.

Slowing Breath. The dragon exhales gas in a 15-foot cone. Each creature in that area must succeed on a DC 12 Constitution saving throw. On a failed save, the creature can't use reactions, its speed is halved, and it can't make more than one attack on its turn. In addition, the creature can use either an action or a bonus action on its turn, but not both. These effects last for 1 minute. The creature can repeat the saving throw at the end of each of its turns, ending the effect on itself with a successful save.

Gold

Fire Breath. The dragon exhales fire in a 15-foot cone. Each creature in that area must make a DC 12 Dexterity saving throw, taking 22 (4d10) fire damage on a failed save, or half as much damage on a successful one.

Weakening Breath. The dragon exhales gas in a 15-foot cone. Each creature in that area must succeed on a DC 12 Strength saving throw or have disadvantage on Strength-based attack rolls, Strength checks, and Strength saving throws for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

 Steel

Acid Breath. The dragon exhales acid in an 30-foot line that is 5 feet wide. Each creature in that line must make a DC 12 Dexterity saving throw, taking 18 (4d8) acid damage on a failed save, or half as much damage on a successful one.

Poison Breath. The dragon exhales poisonous gas in a 30-foot line. Each creature in that area must make a DC 12 Dexterity saving throw, taking 21 (4d8) poison damage on a failed save, or half as much damage on a successful one.

Mercury

Radiant Breath. The dragon exhales blinding light in a 30-foot line that is 5 feet wide. Each creature in that line must make a DC 12 Dexterity saving throw, taking 16 (3d10) radiant damage on a failed save, or half as much damage on a successful one

Blinding Breath. The dragon exhales a blinding light in a 15-foot cone. Each creature in that are must succeed on a DC 12 Constitution saving throw or be blinded for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Iron

Fire Breath. The dragon exhales fire in a 15-foot cone. Each creature in that area must make a DC 12 Dexterity saving throw, taking 22 (4d10) fire damage on a failed save, or half as much damage on a successful one.

Sleep Breath. The dragon exhales sleep gas in a 15-foot cone. Each creature in that area must succeed on a DC 12 Constitution saving throw or fall unconscious for 1 minute. This effect ends for a creature if the creature takes damage or someone uses an action to wake it.

Electrum

Lightning Breath. The dragon exhales lightning in a 30-foot line that is 5 feet wide. Each creature in that line must make a DC 12 Dexterity saving throw, taking 16 (3d10) lightning damage on a failed save, or half as much damage on a successful one.

Weakening Breath. The dragon exhales gas in a 15-foot cone. Each creature in that area must succeed on a DC 13 Strength saving throw or have disadvantage on Strength-based attack rolls, Strength checks, and Strength saving throws for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.