Giant Pufferfish 2014

CR 2 beast

Small beast, unaligned

Armor Class: 13 (natural armor)
Hit Points: 52 (8d8+16)
Speed: swim 40 ft.

STR16 (+3)

DEX12 (+1)

CON15 (+2)

INT2 (-4)

WIS10 (+0)

CHA5 (-3)

Saving Throws
Skills: Perception +0
Damage Immunities: poison
Condition Immunities: poisoned
Senses: darkvision 60 ft., passive Perception 12
Languages: —
Challenge: 2 (450 XP) · Proficiency Bonus +2

Spiny Body.

A creature that touches pufferfish or hits it with melee attack while within 5 ft. of it takes 2 (1d4) piercing damage. While it is puffed up this damage increases to 5 (2d4).

Water Breathing.

Can breathe only underwater.

Bonus Actions

Burst of Speed (Recharge 5–6).

Takes the Dash action.

Puff Up.

For 1 min it increases in size by filling its stomach with air or water. While puffed up it is Medium doubles its damage dice on Bite and Spine attacks (included above) and makes Str checks and Str saves with advantage. If pufferfish lacks the room to become Medium it attains the max size possible in space available.

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