Gigantura 2014

CR 13 monstrosity

Gargantuan monstrosity, unaligned

Armor Class: 16 (natural armor)
Hit Points: 248 (16d20+80)
Speed: swim 60 ft.

STR22 (+6)

DEX16 (+3)

CON20 (+5)

INT6 (-2)

WIS16 (+3)

CHA4 (-3)

Saving Throws: Constitution +1, Wisdom +8, Charisma +2
Skills: Perception +3
Resistances: cold
Condition Immunities: stunned
Senses: darkvision 120 ft., passive Perception 18
Languages: understands Aquan and Deep Speech, but can't speak
Challenge: 13 (10,000 XP) · Proficiency Bonus +5

Telescoping Eyes.

Advantage on Wis (Perception) checks that rely on sight and magical darkness doesn’t impede its darkvision. Also disadvantage on ability checks and saves vs. being blinded.

Water Breathing.

Can breathe only underwater.

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