Adult Infernal Dragon
Huge Dragon, varies
- Armor Class 19(natural armor)
- Hit Points 225(18d12+108)
- Speed 40ft., climb 40ft., fly 80ft.
STR DEX CON INT WIS CHA 25 (+7) 10 (+0) 23 (+6) 16 (+3) 15 (+2) 19 (+4)
- Saving Throws Dex +6, Con +12, Wis +8, Cha +10
- Skills Perception +8, Stealth +6
- Damage Resistances Bludgeoning, Piercing, and Slashing damage from non-magical attacks, cold, lightning
- Damage Immunities Fire, Poison
- Senses blindsight 60ft., darkvision 120ft., passive Perception 17
- Languages Celestial, Common, Draconic
- Proficiency Bonus +6
- Challenge 19 (22000 xp)
Devil Sight The dragon's vision is not obscured by magical darkness.
Draconic Essence When the dragon deals fire and poison damage damage, it can ignore resistance and immunity.
Dragon Scale The dragon has advantage on saving throws against spells and magical effects. On a successful saving throw, the dragon takes no damage at all
Frightful Presence Any creature hostile to the dragon that starts its turn within 20 feet of the dragon must make a DC 18 Wisdom saving throw, unless the dragon is incapacitated. On a failed save, the creature is frightened until the start of its next turn. If a creature's saving throw is successful, the creature is immune to the dragon's Frightful Presence for the next 24 hours.
Legendary Resistance (3/Day) If the dragon fails a saving throw, it can choose to succeed instead. Upon using this feature, the dragon can reroll a d6. Upon rolling a 5-6, it regains its Hellfire Breath.
Actions
Multiattack. The dragon can make four attacks, one with its bite, two with its claws, and one with its tail.
Bite. Melee Weapon Attack: +13 to hit, 10ft., one target. Hit: 18(2d10+7) piercing damage + 9(2d8) fire damage.
Claw. Melee Weapon Attack: +13 to hit, 5ft., one target. Hit: 14(3d4+7) slashing damage.
Tail. Melee Weapon Attack: +13 to hit, 10ft., one target. Hit: 19(2d10+7) bludgeoning damage. On a hit, the target must succeed a DC 20 Strength saving throw or be knocked prone.
Hellfire Breath(Recharge 5-6). The dragon exhales a cone of in a 60ft. cone originating from the dragon. Creatures within range must succeed a DC 18 Constitution saving throw. On a failed saving throw, creatures take 21 (6d6) fire damage + 21(6d6) poison damage and half as much on a success. On a failed saving throw, a creature becomes poisoned for one minute. Creatures can repeat their saving throw at the end of each of its turns to end the effect on a success.
Bonus Actions
Wing Attack The dragon can force all creatures within 10ft. of it to make a DC 21 Dexterity saving throw. On a failed saving throw, the target is pushed back 10ft. and knocked prone. The dragon can fly up to half its movement speed upon using this feature.
Legendary Actions
The 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 dragon regains spent legendary actions at the start of its turn.
Wing Attack The dragon can use its Wing Attack feature
Attack(Costs 2 actions) The dragon can make its choice of a bite or tail attack
Inhale(Costs 2 actions) The dragon can roll a d6. Upon rolling a 5-6, the dragon regains its Hellfire Breath.
Resilience(Costs 3 actions) The dragon can end one spell or status effect on itself.
Lair Actions
On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row:
- The dragon can summon 1d4 devils that are CR 6 or or lower. The dragon cannot use this feature again until all the devils are slain or dismissed..
- The dragon can cast a 5th level Fireball without expending a spell slot.
- The dragon can cast Wall of Fire. The effect lasts until the dragon loses concentration or uses this lair action again.
Regional Effects
The region containing a legendary infernal dragon’s lair is warped by the dragon’s magic, which creates one or more of the following effects:
Portals to the Nine Hells appear within 6 miles of the dragon's lair allowing devils to pass through freely
The regions within 6 miles of the dragon's lair is perpetually warped by unquenchable hellfire
The stench of burning meat and scream fills the area within 6 miles of the dragon's lair.
When the dragon dies, all of these regional effects immediately fade
Infernal Dragons
When a dragon forges a pact with a powerful devil, it begins to transform into an infernal dragon. Due to the arrogant nature of most dragons, most infernal drakes only forge pacts with extremely powerful devils such as the archfiends themselves rather than their underlings. Although all archfiends have infernal dragons within their ranks, Tiamat claims the allegiance of most infernal dragons as she is the patron deity for many dragons across the multiverse. However, these dragons are always scheming to undermine their archfiend overlords to take their domain within the Nine Hells. In fact, some scholars have suspected an overarching conspiracy that Tiamat encourages her draconic kin to forge these pacts in order to usurp their archfiend masters allowing Tiamat and her draconic archfiends to unite the Nine Hells under her banner. However, the veracity of such claims is questionable at best.
Infernal Dragon's Appearance
As innately magical creatures, whenever a dragon forges an infernal pact, its very essence become intertwined with the magical bindings of these deal. As a result, the dragon's appearance begins to transform, taking on a devilish appearance. Their new form grants them considerable advantages over their base draconic body as their demonic hide allows them to shrug off most forms of conventional weapons and magics.
Infernal Dragon Tactics
Just like their devilish underlings, infernal dragons seek to acquire and claim the souls of mortals. If possible, the dragon prefers to simply corrupt their opponent or to bind their victim in an infernal contract as opposed to directly killing them. However, if violence is unavoidable, the infernal dragon can prove to be an extremely challenging opponent. In comparison to its kin, the infernal dragon's primary advantage is its durability thanks to their demonic scales. Additionally, their draconic nature also seems to grant them a natural immunity to many divine magics that specifically weaken fiends. However, despite their physical superiority, infernal dragon's never fight on even terms and will not hesitate to swarm their foes with their fiendish underlings to provide themselves an opportunity to gain the upper hand or flee if the situation requires.