Large Swarm of Medium humanoids, Chaotic Evil
Armor Class 25
Hit Points 150 (10d10 + 4)
Speed 50 ft., If he is trying to maneuver around a character, they get to roll Opportunity with advantage.
STR
20 (+5)
DEX
20 (+5)
CON
20 (+5)
INT
25 (+7)
WIS
25 (+7)
CHA
14 (+2)
Saving Throws INT +16, WIS +16
Skills Intimidation +15
Damage Immunities Acid, Cold, Fire
Senses Truesight, Passive Perception 15
Languages Common Only language players/characters don't know is the one he's known since his creation, which this language is his own.
Challenge 30 (155,000 XP)
Proficiency Bonus +9
Traits

Aggressive: You are quick to initiate combat, and you tend to press the attack once battle is joined. Your enthusiasm makes you a dangerous foe, but you sometimes leave yourself open to blows that a more cautious warrior would avoid.

Spellcasting: Bombastic is a 17th-level spellcaster. Its spellcasting ability is 20 (spell save DC 15, +2 to hit with spell attacks). Bombastic has the following Warlock spells prepared:

Cantrips (at will): Eldrich Blast, Sword Burst, Thunderclap, Poison Spray 
17th level (20 slots): Blade of Disaster, Power Word: Kill

Actions

Melee Attack. Peace: +10 to hit, reach 5 ft.,  1/2 target(s). Hit: 15(5d4 + 4) Slashing damage. 

Ranged Attack. Longbow: +5 to hit, range 10/100 ft., 1 target. Hit: 10(2d6 + 2) Piercing damage.

Bonus Actions

Bonus actions are more of a quick item use or quick spell that doesn't harm saved for right before his turn passes.

Reactions

Counter-Attack: When trying to attack Bombastic, he MAY (not must, MAY) make a reaction of Countering the Attack. If he does, he rolls a d20 (DC 10). If successful, the attacking character takes 2d4 + their attack's damage. This only works with melee attacks.

Legendary Actions

Enter the description for how legendary actions work for your monster here.

Legendary Action Name (Costs # Actions). Enter the description for your legendary action.

Mythic Actions

Enter the description for how mythic actions work for your monster here.

Mythic Action Name (Costs # Actions). Enter the description for your mythic action.

Description

Bombastic is a roughly 7'6" tall creature. He looks like a human most of the time. He has blue hair, and his hair is in a ponytail. He wears a black hat over his hair. His outfit consists of a white shirt and grey pants, and a black jacket over it. 

Lair and Lair Actions

Enter a description of your monster's lair here.

Lair Actions

On initiative count 10 (losing initiative ties), Bombastic takes a lair action to cause one of the following effects; Bombastic can’t use the same effect two rounds in a row:

  • He can use a spell as 1 action for 1 bonus action
  • Lower all other character's speed by 5 ft. (min 15 ft.)

Regional Effects

The region containing Bombastic's lair is an unknown realm in which it seems he's god, which creates one or more of the following effects:

  • All players roll 1d20, and that's their character's new level (they still cast spells at their actual level, just their stats drop to what they were that level). 
  • All players then roll 2d20 +5, that's their new HP. 
  • When entering the realm, all characters are ambushed by 1d20 any creature of DM's choice

If Bombastic dies, these effects fade instantly, and the entire realm falls apart. All creatures in it when it collapses (takes about 1 minute) take 20d10 + 20 damage.

Habitat: Forest

Bombastic9185