Bronze Robodragon

Artificial Life. The robodragon does not require air.

Legendary Resistance (3/Day). If the robodragon fails a saving throw, it can choose to succeed instead.

Steam-powered. If hit by fire or water, instead heal the damage taken and increase Speed by 1.

Multiattack. The robodragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 18 (2d10 + 7) piercing damage.

Claw. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 14 (2d6 + 7) slashing damage.

Tail. Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 16 (2d8 + 7) bludgeoning damage.

Frightful Presence. Each creature of the robodragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 17 Wisdom saving throw or become frightened 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. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the robodragon's Frightful Presence for the next 24 hours.

Breath Weapons (Recharge 5–6). The robodragon uses one of the following breath weapons.

Steam Breath (Recharge 5–6). The robodragon exhales scalding steam in a 60-foot cone. Each creature in that area must make a DC 18 Constitution saving throw, taking 52 (15d6) fire damage on a failed save, or half as much damage on a successful one. Being underwater doesn't grant resistance against this damage.

Repulsion Breath. The robodragon exhales repulsion energy in a 30-foot cone. Each creature in that area must succeed on a DC 19 Strength saving throw. On a failed save, the creature is pushed 60 feet away from the robodragon.

Change Shape. The robodragon magically polymorphs into a humanoid that has a challenge rating no higher than its own, or back into its true form. It reverts to its true form if it dies. Any equipment it is wearing or carrying is absorbed or borne by the new form (the robodragon's choice).

In a new form, the robodragon retains its alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities are otherwise replaced by those of the new form, except any class features or legendary actions of that form.

The robodragon can take 4 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The robodragon regains spent legendary actions at the start of its turn.

Detect. The robodragon makes a Wisdom (Perception) check.

Tail Attack. The robodragon makes a tail attack.

Wing Attack (Costs 2 Actions). The robodragon beats its wings. Each creature within 10 feet of the dragon must succeed on a DC 20 Dexterity saving throw or take 14 (2d6 + 7) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.

Steam Cloud. The robodragon shoots steam from its back. Each creature within a 50-ft sphere centered on the robodragon besides the robodragon must succeed on a DC 20 Intelligence saving throw or be blinded for 10 minutes.