Snow Serpent

[RavenJovan]

Snow Serpent
Large, beast unaligned

AC: 16
HP: 184 (16 d12+80)
SP: 30 ft., burrow 30 ft.

STR: 16 (+3) DEX: 17 (+3) CON: 22 (+6) INT: 1 (-5) WIS: 8 (-1) CHA: 4 (-3)

Saving Throws: STR +6, CON +9
Skills: perception +2, stealth +6
Senses: darkvison 60 ft., tremorsense 60 ft., passive perception 12
Languages: -
CR: 8 (3,900 xp)

Damage Resistance: cold
Damage Immunities: poison
Condition Immunities: poisoned
Snow Camouflage: The serpent has advantage on Dexterity (Stealth) checks made to hide in snowy terrain.

Actions
Multiattack: The serpent makes two bite attacks.

Bite: Melee Weapon Attack: +6 to hit, reach 10ft., one target. Hit: 14 (2d10 + 3) piercing damage plus 3 (1d6) poison damage.

Poison Breath (Recharge 5-6): The serpent exhales poisonous gas in a 30-foot cone. Each creature in that area must make a DC 15 Constitution saving throw, taking 24 (8d6) poison damage on a failed save, or half as much damage on a successful one.

SOURSE MATERIAL: http://www.lomion.de/cmm/snowserp.php
EDIT: Not complete yet, so questions, comments, rebalancing?

[RakiReborn]

Wouldnt cold damage instead of poison be more fitting? At least the breath attack, but i could see it fit well with the bite too.

[Oramac]

Wouldnt cold damage instead of poison be more fitting? At least the breath attack, but i could see it fit well with the bite too.

I would agree with this for the breath attack, though I can see the bite being poison.

[RavenJovan]

The reasoning the bite and breath attack are poison is due to a lore thing, I took this monster from 2nd edition and had it repurposed for 5e uses, I'll post the source in sec.

[Ninja_Prawn]

The attack bonus should be +6, and 2d10+3 = 14. I also get an overall CR of 6.5. I'd beef up the breath weapon a bit to make it up to 8. A young green dragon does 12d6, and it can fly!

What's its alignment?

[RavenJovan]

The attack bonus should be +6, and 2d10+3 = 14. I also get an overall CR of 6.5. I'd beef up the breath weapon a bit to make it up to 8. A young green dragon does 12d6, and it can fly!

What's its alignment?

I'll make those changes changes made, and its a beast so unaligned

[RavenJovan]

Is the breath weapon damage increased enough or does it need more?