Young Mithral Dragon

Magic Resistance. The dragon has advantage on saving throws against spells and other magical effects.

Multiattack. The dragon makes one Bite attack and two Claw attacks.

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 15 (2d10 + 4) piercing damage. Instead of dealing damage, the dragon can end one magical effect of its choice of 3rd level or lower on the target.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage, and if the target isn't a Construct or Undead, it must succeed on a DC 14 Constitution saving throw or lose 3 (1d6) hp at the start of each of its turns as a piece of metallic claw breaks off in the wound. Any creature can take an action to remove the claw with a successful DC 12 Wisdom (Medicine) check. The claw pops out of the wound if the target receives magical healing.

Shard Breath (Recharge 5-6). The mithral dragon spits metallic shards in a 30-foot cone. Each creature in that area must make a DC 14 Dexterity saving throw, taking 28 (8d6) slashing damage on a failed save, or half as much damage on a successful one. The area becomes difficult terrain for 1 minute, then the shards dissolve into wisps of silvery smoke.