Igneel

Igneel Small Brass Dragon, Chaotic Good 1/4 50 xp

Armor class 11 (Natural Armour)
Hit points 11 (2d8 + 2)
Speed 30 ft., fly 60 ft.

STR 15 (+2)
DEX 10 (0)
CON 13 (+1)
INT 10 (0)
WIS 11 (0)
CHA 13 (+1)

Save Throws: Dex +2, Con +3, Wis +2, Cha +2

Skills: Perception +4, Stealth +2

Damage Resistances: Fire

Senses: Blindsight 10 ft, Darkvision 60ft

Languages: Understand Common and Draconic but cannot speak

Challenge: 1/4 (50 xp)

Passive Perception 14

Magic Weapon: Igneel's weapon attacks are magical.

Actions

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit : 1d6 +2 piercing damage.

When Ranger is Level 6
Fire Breath (Recharge 6): The dragon exhales fire in a 15ft. line that is 5 ft. wide. Each Creature in that line must make a DC (9 + proficiency bonus) Dexterity saving throw, taking 2d4 fire damage on a failed save, or half as much damage on a successful one.