Ares' Dragon

Precise Draconic Steed Gains the following features from the rogue class, as their training alongside a Champion has unlocked new skills and abilities. 

• Expertise (in skills)
• Sneak Attack (3d6)
• Cunning Action

Multiattack. The dragon makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 9 (1d10 + 4) piercing damage plus 5 (1d10) acid damage.

Claw. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Sneak Attack
 Once per turn, you can deal an extra 3d6 damage to one creature you hit with an attack if you have advantage on the attack roll or if another enemy of the target is within 5 feet of it, that enemy isn’t incapacitated, and you don’t have disadvantage on the attack roll.

Breath Weapons (Recharge 6). The dragon uses one of the following breath weapons.

Acid Breath. The dragon exhales acid in a 40-foot line that is 5 feet wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 45 (10d8) Acid damage on a failed save, or half as much damage on a successful one.

Slowing Breath. The dragon exhales gas in a 60-foot cone. Each creature in that area must succeed on a DC 16 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.

Cunning Action
Your quick thinking and agility allow you to move and act quickly. You can use a bonus action to take the Dash, Disengage, or Hide action.