Adult Bronze Dragon

The adult bronze dragon can breathe air and water.

3/day (4/day in lair). If the adult bronze dragon fails a saving throw, it can choose to succeed instead.

The adult bronze dragon makes three Rend attacks. It can replace one attack with a use of (A) Repulsion Breath or (B) Spellcasting to cast Guiding Bolt (level 2 version).

Melee Weapon Attack: +12 to hit, reach 10 ft.. Hit: 16 (2d8 + 7) slashing plus 5 (1d10) lightning damage.

Recharge 5–6. Dexterity Saving Throw: DC 19, each creature in a 90-foot-long, 5-foot-wide Line.
Failure: 55 (10d10) lightning damage.
Success: Half damage.

Strength Saving Throw: DC 19, each creature in a 30-foot cone.
Failure: The target is pushed up to 60 feet straight away from the adult bronze dragon and has the Prone condition.

1 use per day. The adult bronze dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 18, +10 to hit with spell attacks):
At Will: Detect Magic, Guiding Bolt (level 2 version), Shapechange (Beast or Humanoid form only, no Temporary Hit Points gained from the spell, and no Concentration or Temporary Hit Points required to maintain the spell), Speak with Animals, Thaumaturgy
1/Day Each: Detect Thoughts, Water Breathing

The adult bronze dragon uses Spellcasting to cast Guiding Bolt (level 2 version).

The adult bronze dragon moves up to half its Speed, and it makes one Rend attack.

Constitution Saving Throw: DC 17, each creature in a 20-foot-radius Sphere centered on a point the adult bronze dragon can see within 90 feet.
Failure: 10 (3d6) thunder damage, and the target has the Deafened condition until the end of its next turn.