# Creating a Deep Dragon; Deep Dragon Spellcasting *Source: Fizban's Treasury of Dragons p. 107* **Deep Dragon Spellcasting** | Age | Spell Save DC | Spells Known | |-----|---------------|--------------| | [Young](/Rules/Source/bestiary/dragon/young-deep-dragon-ftd.md) | 14 | [command](/Rules/Source/spells/command-xphb.md), [dissonant whispers](/Rules/Source/spells/dissonant-whispers-xphb.md), [faerie fire](/Rules/Source/spells/faerie-fire-xphb.md) | | [Adult](/Rules/Source/bestiary/dragon/adult-deep-dragon-ftd.md) | 16 | [command](/Rules/Source/spells/command-xphb.md), [dissonant whispers](/Rules/Source/spells/dissonant-whispers-xphb.md), [faerie fire](/Rules/Source/spells/faerie-fire-xphb.md), [water breathing](/Rules/Source/spells/water-breathing-xphb.md) | | [Ancient](/Rules/Source/bestiary/dragon/ancient-deep-dragon-ftd.md) | 19 | [command](/Rules/Source/spells/command-xphb.md), [dissonant whispers](/Rules/Source/spells/dissonant-whispers-xphb.md), [faerie fire](/Rules/Source/spells/faerie-fire-xphb.md), [passwall](/Rules/Source/spells/passwall-xphb.md), [water breathing](/Rules/Source/spells/water-breathing-xphb.md) | ^deep-dragon-spellcasting