Alasklerbanbastos (5e Creature)

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Design Note: This creature was designed using Mythic Monsters (5e Variant Rule) as a guide.

Alasklerbanbastos[edit]

Titanic dragon, chaotic evil


Armor Class 31 (natural armor)
Hit Points 3327 (55d100 + 550)
Speed 60 ft., burrow 60 ft., fly 120 ft.


STR DEX CON INT WIS CHA
30 (+10) 20 (+5) 30 (+10) 30 (+10) 29 (+9) 30 (+10)

Saving Throws Str +24, Dex +19, Con +24, Int +24, Wis +23, Cha +24
Skills Arcana +24, History +24, Intimidation +24, Perception +37, Stealth +19
Proficiency Bonus +14
Damage Resistances cold; bludgeoning, piercing and slashing damage from magical attacks
Damage Immunities lightning, thunder, necrotic, poison; bludgeoning, piercing and slashing damage from nonmagical attacks
Condition Immunities charmed, frightened, paralyzed, stunned, restrained, poisoned
Senses blindsight 120 ft., darkvision 240 ft., truesight 60 ft., passive Perception 47
Languages Common, Draconic
Challenge 50 (1,220,000 XP)


Lightning and Necrotic Absorption. Whenever Alasklerbanbastos is subjected to lightning or necrotic damage, he takes no damage and instead regains a number of hit points equal to the lightning damage dealt.

Necrotic Aura. Whenever a hostile creature starts its turn within 120 feet of Alasklerbanbastos, it takes 22 (4d10) necrotic damage.

Damage Threshold. Alasklerbanbastos is nigh invulnerable, exceedingly difficult to injure with any form of attack. If Alasklerbanbastos takes less than 30 damage from any attack or source, the damage he takes is reduced to 0.

Limited Magic Immunity. Alasklerbanbastos can't be affected or detected by spells of 6th level or lower unless he wishes to be. He has advantage on saving throws against all other spells and magical effects.

Siege Monster. Alasklerbanbastos deals double damage to objects and structures.

Magic Weapons. Alasklerbanbastos's weapon attacks are magical.

Irresistible Offense. Alasklerbanbastos's attacks, abilities and spells bypass all forms of damage resistance and damage immunity.

Legendary Resistance (10/Day). If Alasklerbanbastos fails a saving throw, he can choose to succeed instead.

Spellcasting. Alasklerbanbastos is a 50th-level spellcaster. His spellcasting ability is Intelligence (spell save DC 32, +24 to hit with spell attacks). Alasklerbanbastos can cast any spell of the appropriate level using his spell slots, and has 4 1st-level slots, 4 2nd-level slots, 4 3rd-level, 4 4th-level, 4 5th-level, 4 6th-level, 4 7th-level slots, 4 8th-level and 4 9th-level slots.

ACTIONS

Multiattack. Alasklerbanbastos can use his Frightful Presence. He then makes five attacks: one with his bite and four with his claws and casts a spell from his Spellcasting feature.

Bite. Melee Weapon Attack: +24 to hit, reach 20 ft., one target. Hit: 48 (7d10 + 10) piercing damage plus 32 (5d12) lightning damage. If the target is a Gargantuan or smaller creature, it must succeed on a DC 28 Dexterity saving throw or be swallowed by Alasklerbanbastos. A swallowed creature is blinded and restrained, it has total cover against attacks and other effects outside Alasklerbanbastos, and it takes 54 (12d8) acid damage and 52 (8d12) lighting damage at the start of each of Alasklerbanbastos's turns.
If Alasklerbanbastos takes 100 damage or more on a single turn from a creature inside it, Alasklerbanbastos must succeed on a Constitution saving throw with a DC equal to the damage taken in that turn divided by four (rounded up) at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 feet of Alasklerbanbastos. If Alasklerbanbastos dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 30 feet of movement, exiting prone.

Claw. Melee Weapon Attack: +24 to hit, reach 15 ft., one target. Hit: 38 (8d6 + 10) slashing damage.

Tail. Melee Weapon Attack: +24 to hit, reach 40 ft., one target. Hit: 46 (8d8 + 10) bludgeoning damage.

Frightful Presence. Each creature of Alasklerbanbastos's choice that is within 300 feet of Alasklerbanbastos and aware of him must succeed on a DC 30 Wisdom saving throw or become frightened for 1 minute. A creature that is frightened is also paralyzed. A creature of CR 18 or lower who becomes frightened in this way suffers a heart attack, instantly dropping to 0 hit points and falling unconscious. A creature that would be made immune to fear through magic instead has advantage on its saving throw. 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 Alasklerbanbastos's Frightful Presence for the next 24 hours.

REACTIONS

Reactive Caster (3/Day). In response to being hit by an attack, Alasklerbanbastos casts a spell against the creature who hit him.

LEGENDARY ACTIONS

Alasklerbanbastos can take 5 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. Alasklerbanbastos regains spent legendary actions at the start of his turn.

Detect. Alasklerbanbastos makes a Wisdom (Perception) check.
Tail Attack. Alasklerbanbastos makes a tail attack.
Cast a Spell (Costs 2 Actions). Alasklerbanbastos casts a spell from his Spellcasting ability, expending a spell slot as normal.
Wing Attack (Costs 2 Actions). Alasklerbanbastos beats his wings. Each creature within 10 feet of Alasklerbanbastos must succeed on a DC 32 Dexterity saving throw or take 38 (8d6 + 10) bludgeoning damage and be knocked prone. Alasklerbanbastos can then fly up to half his flying speed.
Great Roar (1/Day, Costs 3 Actions). Alasklerbanbastos emits a thunderous roar audible out to 600 feet. Each creature that can hear the roar must succeed on a DC 29 Constitution saving throw or take 66 (12d10) thunder damage.
Lightning Breath (Costs 3 Actions). Alasklerbanbastos exhales lightning in a 200-foot line that is 20 feet wide. Each creature in that line must make a DC 32 Dexterity saving throw, taking 143 (22d12) lightning damage on a failed save, or half as much damage on a successful one.

Alasklerbanbastos is a very powerful blue greatwyrm dracolich, also known as the Great Bone Wyrm.

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