Medium Dragon, lawful good
Armor Class 17 (natural armor)
Hit Points 60 (8d8+24)
Speed fly +60, swim +30, walk +30
Challenge 3
Saving Throws cha +5, con +5, dex +4, wis +2
Skills stealth +4, perception +4
Damage Immunities fire
Senses blindsight 10 ft., darkvision 60 ft., passive Perception 14
Languages Draconic
Amphibious. The dragon can breathe air and water.
Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 9 (1d10 + 4) piercing damage.
Breath Weapons (Recharge 5-6). The dragon uses one of the following breath weapons. **Fire Breath.** The dragon exhales fire in a 15-foot cone. Each creature in that area must make a DC 13 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 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.
Source: 5e Core Rules · OGL/Open