Kassoon

Ancient Chaos Dragon

Gargantuan Dragon, Chaotic Neutral
Armor Class 22
Hit Points 526 (27d20+243)526 ([27d20+243])
Speed 40 ft., 40 ft. climbing, 80 ft. flying
STR
30 (+10)
DEX
10 (+0)
CON
28 (+9)
INT
17 (+3)
WIS
16 (+3)
CHA
22 (+6)

Saving Throws Dex +7, Con +16, Wis +10, Cha +13 Dex [+7], Con [+16], Wis [+10], Cha [+13]
Skills Perception +17, Stealth +7, Intimidation +13, Athletics +17 Perception [+17], Stealth [+7], Intimidation [+13], Athletics [+17]
Damage Vulnerabilities
Damage Resistances -
Damage Immunities Force
Condition Immunities - -
Senses blindsight 60 ft., darkvision 120 ft., passive Perception 27 blindsight 60 ft., darkvision 120 ft., passive Perception 27
Languages Common, Draconic
Challenge 20 (25,000 XP)

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Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.

Chaotic Form. The dragon has a chaotic cloak of arcane energy around it, causing attack rolls against it to have disadvantage. If it is hit by an attack, this trait is disrupted until the end of its next turn. This trait is also disrupted while the dragon is incapacitated or has a speed of 0.

Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.

Chaotic Form. The dragon has a chaotic cloak of arcane energy around it, causing attack rolls against it to have disadvantage. If it is hit by an attack, this trait is disrupted until the end of its next turn. This trait is also disrupted while the dragon is incapacitated or has a speed of 0.

Actions

Multiattack. The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +17 to hit, reach 15 ft., one target. Hit: 21 (2d10+10) piercing damage plus 14 (4d6) force damage.

Claw. Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 17 (2d6+10) slashing damage.

Tail. Melee Weapon Attack: +17 to hit, reach 20 ft., one target. Hit: 19 (2d8+10) bludgeoning damage.

Frightful Presence. Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 21 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours.

Force Breath (Recharge 5-6). The dragon exhales a blast of arcane force in a 120-foot line that is 10 feet wide. Each creature in that line must make a DC 24 Dexterity saving throw, taking 108 (24d8) force damage on a failed save, or half as much damage on a successful one.

Multiattack. The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: [+17] to hit, reach 15 ft., one target. Hit: 21 ([2d10+10]) piercing damage plus 14 ([4d6]) force damage.

Claw. Melee Weapon Attack: [+17] to hit, reach 10 ft., one target. Hit: 17 ([2d6+10]) slashing damage.

Tail. Melee Weapon Attack: [+17] to hit, reach 20 ft., one target. Hit: 19 ([2d8+10]) bludgeoning damage.

Frightful Presence. Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 21 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours.

Force Breath (Recharge 5-6). The dragon exhales a blast of arcane force in a 120-foot line that is 10 feet wide. Each creature in that line must make a DC 24 Dexterity saving throw, taking 108 ([24d8]) force damage on a failed save, or half as much damage on a successful one.

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.

Detect. The dragon makes a Wisdom (Perception) check.

Tail Attack. The dragon makes a tail attack.

Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 15 feet of the dragon must succeed on a DC 25 Dexterity saving throw or take 17 (2d6+10) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.
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.

Detect. The dragon makes a Wisdom (Perception) check.

Tail Attack. The dragon makes a tail attack.

Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 15 feet of the dragon must succeed on a DC 25 Dexterity saving throw or take 17 ([2d6+10]) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.
 

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Monster Statistics by Challenge Rating

CRProf. BonusACHPAttack BonusDamage / RoundSave DC
0+2<131-6<+30-1<13
1/8+2137-35+32-313
l/4+21336-49+34-513
1/2+21350-70+36-813
1+21371-85+39-1413
2+21386-100+315-2013
3+213101-115+421-2613
4+214116-130+527-3214
5+315131-145+633-3815
6+315146-160+639-4415
7+315161-175+645-5015
8+316176-190+751-5616
9+416191-205+757-6216
10+417206-220+763-6816
11+417221-235+869-7417
12+417236-250+875-8017
13+518251-265+881-8618
14+518266-280+887-9218
15+518281-295+893-9818
16+518296-310+999-10418
17+619311-325+10105-11019
18+619326-340+10lll-11619
19+619341-355+10117-12219
20+619356-400+10123-14019
21+719401-445+11141-15820
22+719446-490+11159-17620
23+719491-535+11177-19420
24+719536-580+12195-21221
25+819581-625+12213-23021
26+819626-670+12231-24821
27+819671-715+13249-26622
28+819716-760+13267-28422
29+919761-805+13285-30222
30+919806-850+14303-32023

Damage Severity by Level

LevelSetbackDangerousDeadly
1-41d102d104d10
5-102d104d1010d10
11-164d1010d1018d10
17-2010d1018d1024d10

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