Bestiary‎ > ‎(Bestiary) By Type‎ > ‎Dragons‎ > ‎Dragons, True‎ > ‎

(Imperial) Underworld

This serpentine dragon has skin the color of deep volcanic rock, enormous claws, and jagged, stonelike horns and scales.

Underworld Dragon

LE dragon (fire)


CR 3; Size Tiny; Hit Dice 4d12
Speed 40 ft., burrow 30 ft.
Natural Armor +4; Breath Weapon line, 2d6 fire
Str 13, Dex 14, Con 13, Int 10, Wis 11, Cha 10


Adamantine Claws (Ex)

The claws of an underworld dragon are made of adamantine, and have the qualities of a weapon made from that material.

Change Shape (Su)

A young or older underworld dragon can assume any humanoid form three times per day as if using polymorph.

Lava Eruption (Su)

As a full-round action, a great wyrm underworld dragon can burrow through the ground up to twice its burrow speed. At the end of that movement, if the underworld dragon has use of its breath weapon, it can emerge from the ground spouting lava in a 30-foot-radius burst, dealing damage as the breath weapon.

Smoke Vision (Ex)

A very young and older underworld dragon can see perfectly in smoky conditions (such as those created by pyrotechnics).

Underworld Burrower (Ex)

An adult underworld dragon gains a 10-foot bonus to its burrow speed. When the underworld dragon becomes old and every two age categories thereafter, its burrow speed increases by an additional 10 feet.

CR Age Category Special Abilities Caster Level
Wyrmling Adamantine claws, immunity to fire
5 Very young Smoke vision
Young Change shape, soften earth and stone
Juvenile Frightful presence, stone shape 1st
Young adult DR 5/magic, spell resistance 3rd
 11 Adult Spike stones, underworld burrower 5th
Mature adult DR 10/magic 7th
Old Wall of stone 9th
 15 Very old DR 15/magic 11th
 16 Ancient Repel metal or stone  13th
 17 Wyrm DR 20/magic 15th
 19 Great wyrm Clashing rocks*, lava eruption 17th