Quote from Drag0nl0rd999 >>

Is throwing this at my level 4 party a good idea? 3 people, One barbarian one ranger one wizard.

 See DMG 82 for guidance on how to judge encounter difficulty.  (While this guidance is not perfect, and needs some tweaks for some cases/situations, it should work pretty well for a simple setup like this.)  According to that guidance, this would be a Deadly encounter for a party of 3 4th-level characters, but not insanely so -- the threshold for Deadly for such a group is 1500 adjusted XP, and this monster is 1800.  So, it'll be a tough fight where one or more of them could well go down, but it should be a doable challenge.  Could be good for a boss (assuming you haven't drained too many of their resources beforehand) or for a nighttime encounter after an otherwise uneventful day, where they know they can give it all they've got.  But it COULD be a TPK if the party doesn't fight smart or if they don't have resources.

Quote from WillFawkes >>

Quote from Dwayne >>

I just bought the miniature for this monster cause it was so cool and would love to run it for my daughters 3 person level 1 party instead of all the normal 1st level suspects < humanoid monsters but it would absolutely destroy them. Any ideas on scaling this back to be a somewhat scary and challenging monster for a beginner group? I was thinking that they could run into smaller " chunks" of the mound throughout the adventure then at the end after fighting all the little guys they see it come together and merge into one large mound ala a Transformers for the final confrontation. Thoughts?

 Perhaps use some other plant creatures before, like an awakened shrub, or just use goblins that have vines wrapped around them, maybe coming out of their mouths and wrapping them up.   

 You could also use some blights

among us

I understand this reference I'm literally dealing with that now XD

These paired with Wil o Whisps are great... given the lightning aspects.. 

10 out of 10 Recommend.

Party likes to Ambush things... well things like to Ambush them too.

We just killed one this evening and didn't loose a single lifepoint with all on lvl 3. The sorcerer casted web and it got restraint. It needed 3 rounds to get out of the web. Afterwards our druid turned into a spider and shot also a web on it. This happened 1 more time and during the entanglements we attacked and casted spells until it was defeated. awesome evening!!! :)

it has hilarious official art...(the guy's name is Bob)

charmed Shambling mound + mage w/ shocking grasp = boss level encounter >:3

I'm playing a CoS game and we returned to the starting location after skipping this in the beginning. We are level 6 and we destroyed everything else in the house. We then got to this boss. I, the party druid, cast lightning bolt many times getting above average rolls. The npc ally also repeatedly cast lightning bolt despite literally being a monster hunter, and the DM gave 0 hints that anything strange was happening. Jokes on him, I'm the DM in a separate campaign tomorrow. I'm thinking a few tarrasques?

First of all level 7.
Second the Npc is a Vampire hunter.
Third I'm sorry I didn't hint sooner but as soon as you left Tchatchka figured it out after making an insight check. In my defense I though that the fact he wasn't dying was a hint enough that something strange was happening. I didn't mean for it to feel unfair.

I cheated with this on my campain

If you lowered the damage and hit points it would be, other wise 2d8 from a single attack could seriously mess up a level two player. Unless you loaded them up with magic items, this could easy TPK a level two party