Randall:

”I understand your desire to not kill these plants now that we know they are not mindless attackers, but what is your plan here?” asks Randall, saying, “I’m not sure I know how to help.”

OOC:  Readying a Sacred Flame if the Purplewraiths break free and start attacking, but otherwise waiting to see what happens.

Fair point, I had overlooked you were having the Unseen Servant tie the knots so it will not be at disadvantage, but it is still a INT (Sleight of Hand) check not a DEX (Sleight of Hand) check for the Unseen Servant which has 10's for all stats except STR. (I know Sleight of Hand is a DEX based skill.)

Quote from Brian_Avery >>

Fair point, I had overlooked you were having the Unseen Servant tie the knots so it will not be at disadvantage, but it is still a INT (Sleight of Hand) check not a DEX (Sleight of Hand) check for the Unseen Servant which has 10's for all stats except STR. (I know Sleight of Hand is a DEX based skill.)

 Sure. Why INT though if I may ask? Is this for the trickiness on knotting up a plant with no arms? I thought it was a typo, hence rolled Dex.

Do you need Z or the Unseen servant to roll this? Z is proficient for slight of hand. Not sure if that applies to the unseen servant too. The unseen servant had the same stats for all skills except STr so it doesn't matter anyway which one we roll for.

So for different assumptions, please pick the right one:

If it's Z as the caster rolling: (+3 for proficiency in Sleight of Hand. +-0 for INT 11) 18

If it's the unseen servant rolling: 13 (I am assuming no proficiency or zero proficiency bonus)

(OOC. Z is using the unseen servant to stay out of range in case things go wrong. If someone else feels braver, or had more HP, feel free to step in and help tying knots)

Yeah, I was using the rules from Xanathar's for tying knots. That's where I got the INT (Sleight of Hand) roll from. It sets the DC to escape from the knots. The Purplewraths still have no arms so it's all probably moot anyway.

(Tempe is up. Bow is next.)

Tempe watches keeping an eye  out for more creatures not understanding why they're tying up a creature that excretes poison.

"Just collect the seeds would be better..."  

"Why would we tie up these plants? Just kill them, we have heard how dangerous they are." Bow says as he shoots at another plant.

Attack: 23 Damage: 24 Bless: 3

Attack: 22 Damage: 23 Bless: 4

BA Attack: 15 Damage: 21 Bless: 1

Bow fires 3 bolts into one of the PWs and it dies. (took all 3 shots)

Initiative Rolls:
Right 4 Ambush PWs: 14
Left 4 Ambush PWs: 7

Round 3

Initiative Order:

Petcan
Front 3 Ambush PWs
Left 4 Ambush PWs
Right 4 Ambush PWs
Zenodor
Randall
Tempe
Bow

(Petcan is up.)

Petcan tries to keep playing music to the plants

Performance 22 

(I feel like Summer from Spiritfarer lol)

The 4 PWs from the left and the 4 PWs from the right move in from each side until they are 30 feet away. At which point they stop and begin swaying slowly as if there were a gentle breeze. One PW from each side emits a spray of purple mist, each with a 30 foot radius.

The mist is slowly spreading to fill up the clearing. You have 1 Round, until it gets back to the PW"s turns that sprayed, to deal with it in some way.

(Zenodor is up. Randall is next.)

Zenodor looks right and left at the two new groups of ambushers and sighs in resignation. Telepathically, he communicates with the plants (or hive mind, or whatever) "Remember this: You made us do this. You continue to attack us and the villagers every time!"

He then casts Blight (as before, since they are plants: 64 damage, or 1/2 on DC15 CON save) on one of the plants that is not bound in the hypnotic pattern, and then proceeds to move vertically out of range as far as possible (i.e. 30ft)

(on the INT check for ropes: I know the part of X's guide you're referring to. But personally I always thought that part was silly. It's much easier to tie someone up than to escape, so it should have like a +20 bonus to tying it - especially since the person tying the knot didn't have his/her/its wrists and arms bound at the time. With some basic knowledge, a child could tie you up so that you can't get out of it, or they could just put the knot on the opposite side from where you can see or reach it)

Randall:

Moving over to Petcan, Randall says, “I don’t think we are getting out of this without a fight—do you still have that Warding Wind spell available?” as he sees the poisonous cloud spreading from the plants.

Once he has moved, Randall invokes his Spiritual Weapon and sends it to attack the same ambushing group of Purplewraiths that Zenodor just attacked, then he casts Sacred Flame on the same target.

Spiritual Weapon:  Attack: 28 Damage: 19 plus Bless:  3

Sacred Flame:  DC 16 Dexterity or 8 radiant damage

PW CON save: 15

PW DEX save: 13

2 PWs from the Right Ambush group are hurt by the spells and attacks that Zenodor and Randall cast.

(Tempe is up. Bow is next.)

"It seems were at a impasse, this time collect the seeds." He flies up and throws his sunbolts Attack: 10 Damage: 9 Attack: 22 Damage: 9 at the attacking Purple wraths Pinky joining him spitting a fiery seed. Attack: 8 Damage: 9

Tempe misses with his 1st red hot sunbolt but his 2nd sizzles into a Purplewrath. Pinky spits a fiery seed and burns the Purplewrath further.

(Bow is up. Petcan is next.)

Bow fires his bolts at one of the pw with the purple mist.

Attack: 13 Damage: 21 + bless 3

Attack: 10 Damage: 21 + bless 4

Ba Attack: 14 Damage: 23 + bless 2