Sources
CR
Type
Size
Alignment
Movement

Sapphire Dragon Wyrmling

Medium Dragon (gem), Lawful Neutral

Armor Class 16 (natural armor)
Hit Points 45 (6d8 + 18)
Speed 30 ft., fly 60 ft., climb 30 ft., burrow 15 ft.
STR
17
+3
DEX
14
+2
CON
16
+3
INT
14
+2
WIS
13
+1
CHA
14
+2
Saving Throws DEX +4, CON +5, WIS +3, CHA +4
Skills History +4, Perception +5, Persuasion +6, Stealth +4
Damage Resistances lightning, thunder
Condition Immunities Frightened
Senses blindsight 30 ft., darkvision 120 ft., passive Perception 15
Languages Draconic, telepathy 120 ft.
Challenge 3 (700 XP)

Traits

Spider Climb. The dragon can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Tunneler. The dragon can burrow through solid rock at half its burrowing speed and can leave a 5-foot-diameter tunnel in its wake.

Spellcasting

Spellcasting (Psionics). The dragon casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability:

1/day each: alarm, Tenser's floating disk

Actions

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit:8 (1d10 + 3) piercing damage plus 3 (1d6) thunder damage.

Debilitating Breath (Recharge 5–6). The dragon exhales a pulse of high-pitched, nearly inaudible sound in a 15-foot cone. Each creature in that area must make a DC 13 Constitution saving throw. On a failed save, the creature takes 22 (4d10) thunder damage and is incapacitated until the end of its next turn. On a successful save, the creature takes half as much damage and isn't incapacitated.

Lore

The thunderous clash of conflict is part of the very nature of sapphire dragons. Militant and territorial, they defend their lairs fiercely, ambushing intruders and plotting assaults against their rivals. The sonic pulse of their breath weapon sows weakness, leaving the victims unable to fight back.