Adult Silver Dragon

If the monster fails a saving throw, it can choose to succeed instead.

The monster makes three attacks. It can replace one attack with a use of (A) or (B) to cast Ice Knife.

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Constitution Saving Throw: DC , each in a -foot Cone.
Failure: damage.
Success: Half damage.

Constitution Saving Throw: DC , each in a -foot Cone.
First Failure: The target has the Incapacitated condition until the end of its next turn, when it repeats the save.
Second Failure: The target has the Paralyzed condition, and it repeats the save at the end of each of its turns, ending the effect on itself on a success. After 1 minute, it succeeds automatically.

The monster casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC , +11 to hit with spell attacks):
At Will: Detect Magic, Hold Monster, Ice Knife, 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)
1/Day Each: Ice Storm (level 5 version), Zone of Truth