Brunnmigi

Large monstrosity, unaligned

Armor Class 13 (natural armor)
Hit Points 32 (5d10 + 5)
Speed 60 ft.

STR	DEX	CON	INT	WIS	CHA
15 (+2)	16 (+3)	13 (+1)	4 (-3)	15 (+2)	10 (+0)

Saving Throws Constitution +3
Skills Perception +4, Stealth +5, Survival +4
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 60 ft., passive Perception 14
Languages –
Challenge 4 (1,100 XP)

Special Traits

• Corrupt Water. At the start of each of the brunnmigi’s turns, exposed water within 30 feet of it is befouled. Underwater, this effect lightly obscures the area until a current clears it away. Water in containers remains corrupted until it evaporates. A creature that consumes this foul water or swims in it must make a DC 11 Constitution saving throw. On a successful save, the creature is immune to the foul water for 24 hours. On a failed save, the creature takes 14 (4d6) poison damage and is poisoned for 1 minute. At the end of this time, the poisoned creature must repeat the saving throw. On a failure, the creature takes 18 (4d8) poison damage and is poisoned until it finishes a long rest.
• Keen Hearing and Smell. The brunnmigi has advantage on Wisdom (Perception) checks that rely on hearing or smell.
• Pack Tactics. The brunnmigi has advantage on an attack roll against a creature if at least one of the brunnmigi’s allies is within 5 feet. of the creature and the ally isn’t incapacitated.
• Pounce. If the brunnmigi moves at least 20 feet straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 12 Strength saving throw or be knocked prone. If the target is prone, the brunnmigi can make one bite attack against it as a bonus action.

Actions

• Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (2d4 + 3) piercing damage.
• Claw. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage.

About

This fox is the size of a horse and has a peculiar smell of urine about it.

Brunnmigi look like foxes but have an irritating tendency to pollute any water near them. They are fond of living near springs and streams that gush out of mountains. They mark strategically elevated objects, like rocks, stumps, or vegetation cresting through snow, or even the intersection of two trails. Both genders leave marks and when looking for food, can mark once every minute in an hour.

Curse of Jotunheim. Brunnmigi are wild, irritating creatures that hail from Jotunheim, but those that sneak their way into Midgard are known for souring water supplies and even streams so that they taste metallic and undrinkable.