Brass and White headed dragon

Two headed. The creature has advantage on Wisdom (Perception) checks and on saving throws against being blinded, charmed, deafened, frightened, stunned, and knocked unconscious.

Multiattack. The creature makes three attacks: two with each of its bites, and one with its Stinger. When a breath weapon is available, it can only use only one breath per turn in place of one bite. Each dragon head has its' own recharge roll per start of turn.

Frost Bite. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 15 (2d10 + 4) piercing damage plus 4 (1d8) cold damage.

Bite. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 15 (2d10 + 4) piercing damage.

Stinger. Melee Weapon Attack: +8 to hit, reach 10 ft., one creature. Hit: 11 (2d6 + 4) piercing damage. The target must make a DC 16 Constitution saving throw, taking 24 (7d6) poison damage on a failed save, or half as much damage on a successful one.

Cold Breath (Recharge 6). The dragon exhales an icy blast in a 30-foot cone. Each creature in that area must make a DC 16 Constitution saving throw, taking 45 (10d8) cold damage on a failed save, or half as much damage on a successful one.

Fire Breath (Recharge 6).The dragon exhales fire in a 40-foot line that is 5 feet wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 42 (12d6) fire damage on a failed save, or half as much damage on a successful one.