Multiattack. The dragon makes two Rend attacks.
Rend. Melee Attack Roll: +7, reach 10 ft. Hit: 8 1d6+4 Slashing damage, plus 5 1d8 necrotic damage.
Elemental Breath (Recharge 5–6). The dragon exhales elemental energy from its past life. Choose one of the following damage types when this trait is gained: acid, cold, fire, lightning, or poison.
Dexterity Saving Throw: DC 14, each creature in a 30-foot cone. Failure: 28 8d6 damage of the chosen type. Success: Half damage.