Bronze Wyrmling Wizard

Amphibious. The dragon can breathe air and water.

Spellcasting. The dragon is a 2nd-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 12, +4 to hit with spell attacks). It has the following wizard spells prepared:

Cantrips (at will): mage hand, prestidigitation, ray of frost (see “Actions” below)

1st level (3 slots): detect magic, mage armor, magic missile (see “Actions” below), shield

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (1d10 + 3) piercing damage.

Magic Missile (Expends a 1st-Level Spell Slot). The dragon creates three magical darts. Each dart hits a creature the dragon chooses within 120 feet of it and deals 3 (1d4 + 1) force damage.

Ray of Frost. Ranged Spell Attack: +4 to hit, range 60 ft., one creature. Hit: 4 (1d8) cold damage, and the target’s speed is reduced by 10 feet until the start of the dragon’s next turn.

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

Lightning Breath. The dragon exhales lightning in a 40-foot line that is 5 feet wide. Each creature in that line must make a DC 12 Dexterity saving throw, taking 16 (3d10) lightning damage on a failed save, or half as much damage on a successful one.

Repulsion Breath. The dragon exhales repulsion energy in a 30-foot cone. Each creature in that area must succeed on a DC 12 Strength saving throw. On a failed save, the creature is pushed 30 feet away from the dragon.

Change Shape. The dragon magically transforms into any creature that is Medium or Small, while retaining its game statistics (other than its size). This transformation ends if the dragon is reduced to 0 hit points or uses a bonus action to end it.