Narwhal

Narwhal CR: 2 (450 XP)

Large beast, unaligned

Armor Class: 10 (natural armor)

Hit Points: 52 (8d10+8)

Speed: , swim: 40 ft

STR

19 +4

DEX

10 +0

CON

16 +3

INT

7 -2

WIS

17 +3

CHA

12 +1

Skills: Athletics +6, Perception +7

Damage Resistances: Cold

Senses: darkvision 60ft., passive Perception 17

Challenge Rating: 2 (450 XP)

Hold Breath. The tusktooth whale can hold its breath for 90 minutes
Echolocation. The narwhal can't use blindsight while deafened
Keen Senses. The narwhal whale has advantage on Wisdom (Perception) checks relying on hearing or sight
Siege Monster. The narwhal whale can deal double damage to buildings and ships.
Dive Attack. If the narwhal whale moves at least 20ft. straight towards a target and then hits it with a bite attack on the same turn, the target takes an extra 13(2d12) piercing damage.

Actions

Gore. +6 to hit:, 10ft., , one target. Hit 17(2d12+4) piercing damage.