| Mod | Save | ||
|---|---|---|---|
| STR | 26 | +8 | +28 |
| DEX | 14 | +2 | +14 |
| CON | 25 | +7 | +26 |
| Mod | Save | ||
|---|---|---|---|
| INT | 20 | +5 | +21 |
| WIS | 23 | +6 | +22 |
| CHA | 24 | +7 | +25 |
Choking Cloud: Any time the underworld dragon casts fog cloud, creatures except for the underworld dragon inside the affected area must hold their breath or begin to suffocate. Spells with verbal components cannot be cast within the affected area.
Innate Spellcasting: The underworld dragon’s spell casting ability is Charisma (spell save DC 17). It can innately cast the following spells, requiring no material components:
At will: burning hands
3/day each: fog cloud, scorching ray
1/day each: disintegrate, fireball, delayed blast fireball
Legendary Resistance (3/Day). If the underworld dragon fails a saving throw, it can choose to succeed instead.
Treasure Scent. An underworld dragon can smell precious metals and gemstones within 120 feet, not requiring a Wisdom (Perception) ability check.
- Multiattack. The underworld dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
- Bite. Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 47 (6d12 + 8) piercing damage.
- Claw. Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 16 (2d8 + 8) slashing damage.
- Tail. Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 26 (4d8 + 8) bludgeoning damage.
- Fire Breath (Recharge 5-6). The underworld dragon exhales burning flames in a 60-foot line. Each creature in that line must make a DC 19 Dexterity saving throw, taking 31 (7d8) fire damage on a failed save, or half as much damage on a successful one.
Once Per day: Plane shift
Hellish Rebuke
3 times a day: The creature that damaged the underworld dragon is momentarily surrounded by green flames. It makes a Dexterity saving throw, taking 4d10 Fire damage on a failed save or half as much damage on a successful one.
Using a Higher-Level Spell Slot. The damage increases by 1d10 for each spell slot level above 1.
The underworld dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The imperial underworld dragon regains spent legendary actions at the start of its turn.
- Detect. The imperial underworld dragon makes a Wisdom (perception) check.
- Tail Attack. The imperial underworld dragon makes a tail attack.
Description
Lair and Lair Actions
On initiative count 20 (losing initiative ties), the imperial underworld dragon takes a lair action to cause one of the following effects: The imperial underworld dragon can’t use the same effect two rounds in a row:
- An underworld dragon can summon one creature that lives in the caves or underground that is CR 2 or less to a space within 60 feet of it. This creature is loyal to the underworld dragon and will do anything to defend it.
- The underworld dragon can cause one dead humanoid’s corpse to rise again as a fire elemental loyal to the imperial underworld dragon. This fire elemental has 50 maximum hit points and does not have the Multiattack ability.
- The underworld dragon can cause a 20-foot radius to become absolute darkness that even creatures with darkvision cannot see through, except for the underworld dragon. This area lasts for 1 turn.
The region containing the imperial underworld dragon’s lair is shaped by its dark power, which creates one or more of the following effects:
- Cracks in the ground begin to form within 1 mile of the imperial underworld dragon’s lair, spewing lava out of them.
- People within 5 miles of the imperial underworld dragon’s lair become greedier than they would usually be, and the dragon itself becomes aware of items of great value that enter its domain. Creatures that remain within this area for more than 1 week become selfish and vindictive, behaving as if their alignment was lawful evil. This effect ends when a creature leaves the area or the imperial underworld dragon dies.
- The area within 5 miles of the imperial underworld dragon’s lair becomes covered in an oppressive smoky haze that is humid to breathe in.
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