Snallygaster 2014

CR 15 aberration

Huge aberration, unaligned

Armor Class: 16 (natural armor)
Hit Points: 207 (18d12+90)
Speed: 30 ft., fly 30 ft.

STR24 (+7)

DEX10 (+0)

CON21 (+5)

INT4 (-3)

WIS14 (+2)

CHA12 (+1)

Saving Throws: Strength +1, Constitution +1, Wisdom +7
Skills: Perception +2
Damage Immunities: acid, thunder
Condition Immunities: frightened
Senses: darkvision 120 ft., passive Perception 12
Languages: —
Challenge: 15 (13,000 XP) · Proficiency Bonus +5

Magic Resistance.

Advantage: spell/magic effect saves.

Regeneration.

Regains 15 hp at start of its turn if it has 1+ hp.

Bonus Actions

Nimble Flier.

Takes the Dash or Disengage action. It must be flying to use this bonus action.

Reactions

Parry Spell.

If it succeeds on save vs. spell of 5th level or lower that targets only snallygaster spell has no effect. If snallygaster succeeds on save by 5+ spell is reflected back at spellcaster using slot level spell save DC attack bonus and spellcasting ability of caster

Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details