Its Paralyzing Tentacles attack has a major oversight; being a Dexterity saving throw instead of a Constitution saving throw makes it so you are Paralyzed for the entire duration, because while Paralyzed you automatically fail all Dexterity saving throws.

One of the fiends from the Sigil monster book had the same thing

Subsequent saves should be Con?

Nah let the CR bug paralyse for an entire minute off a single failed save , it will be funny

To anyone saying the paralysed condition is an oversight... Yes it's confusing, but consider this:

The paralysis is a secondary condition, so doesn't apply to the save of the poison. It only exists while the poison is active - and thus isn't considered in the save. It's sort of an after effect, in my opinion.It's sort of like a flow chart - 

If poison save fail - consider paralysis

If poison save succeed - ignore paralysis 

You consider it a poison with no additional effects for the sake of the save and the paralysis is the extra step. 

I know it's worded confusingly, but I have a feeling this is what they meant rather than forgetting their own rules. Especially on a CR2 baby. 

Sure but like once you fail that initial save you are poisoned and paralysed, so any of the subsequent saves that would end it before it reaches its minute long duration become automatic fails, you don’t like temporarily become unpoisoned to make the save again

The lack of proofreading is concerning

Quote from RalfOfAmber >>

Subsequent saves should be Con?

 This has my vote. Makes more sense anyway: Dex to initially avoid tentacles, Con to resist the poison.

Yeah there’s no way this would have been missed if it had seen active playtesting 

That would be my call when dming too

Yeah Dex for tentacles and con for poison  would be a LOT easier 

Quote from RalfOfAmber >>

Subsequent saves should be Con?

 Yes, most sensible ruling.

its technically able to be gotten out of if you have freedom of movement to negate the paralyzed condition.

Let's be honest, they repeatedly forget their own rules in 5e, so im not surprise they did it here, it will be change in first errata to con and everyone will be happy

Quote from RJP1973 >>

Quote from RalfOfAmber >>

Subsequent saves should be Con?

 This has my vote. Makes more sense anyway: Dex to initially avoid tentacles, Con to resist the poison.

 As far as I'm understanding it?

Carrion Paralyzing Tentacle: DC 12 DEX save to avoid.

If failed? You're poisoned with a contact paralysis poison. (Carrion Mucus)

Treat the following rolls as rolling against the item (Carrion Mucus) (DC 13 CON Save). That's unless the Carrion grapples the target.

The tentacles paralyze via being coated in the mucus. They don't automatically grapple, or it'd say. They basically just smack you to apply the poison.

Seems you were right and the save has been changed to constitution now.

I love the new artwork. So intimidating. 

For stats, first of all thank the gods that they changed the paralyzing tentacle save to con so its not a perma stun. 

Got a better perception now which is nice. Will keep the keen smell of the old one. Was just more flavour to it. 

His bite attack has 3 dmg more now. The tentacle is not an attack roll anymore and the dc is lower than before  and lost the dmg for the hit. 

Overall slightly weaker i guess but still a nice monster