Kydreon,The Insane (5e Creature)
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Kydreon, The Insane
Colossal dragon, chaotic evil
Saving Throws Dexterity +11, Constitution, +19, Wisdom +13, Charisma +16
Amphibious. The dragon can breathe air and water.
Acid Absportion. Whenever the dragon is subjected to acid damage, it takes no damage and instead regains a number of hit points equal to the acid damage dealt.
Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.
Magic Resistance. The dragon has advantage on saving throws against spells and other magical effects.
Siege Monster. The dragon deals double damage to objects and structures.
Spellcasting. The Dragon is a 20th-level spellcaster.
It's spellcasting ability is Charisma (spell save DC 26, +18 to hit with spell attacks).
The Dragon has the following Warlock spells prepared:
6th level: circle of death
7th level: finger of death
8th level: feeblemind
9th level: power word kill
Warlock. Kydreon is considered a level 20 Warlock.
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 +19, Reach 15ft., one target. Hit: 26 (3d10+10) piercing damage plus 13 (2d12) acid damage.
Claw. Melee Weapon Attack +19, Reach 10ft., one target. Hit: 20 (3d6+10) piercing damage.
Tail. Melee Weapon Attack +19, Reach 20ft., one target. Hit: 23 (3d8+10) piercing 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 26 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.
The 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 regains spent legendary actions at the start of its turn.
Detect. The Dragon Makes a Perception check.
Tail Attack. The Dragon makes a tail attack.
Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 15 ft. of the dragon must succeed on a DC 27 Dexterity saving throw or take 20 (3d6 + 10) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.
Acid Breath (Costs 3 Actions). The dragon exhales acid in a 150-foot line that is 10 feet wide. Each creature in that line must make a DC 27 Dexterity saving throw, taking 135 (30d8) acid damage on a failed save, or half as much damage on a successful one.