Billy yells at you that you should stop climbing this tree.

17 con save

Sorry but that fails, take 11 bludgeoning damage due to falling from 30 feet, Airsenhite tries to catch you but fails with a 12 and now you take instead of 11 damage, 9 damage as Airsenhite takes 2 of it.

Severon is going to stand up and attack the tree

Roll for damage please.

2 damage

When you hit this tree you hear a piercing screech come from it as you feel the unarmed attack you just dealt to the tree reverse directions and hit you, take 2 damage.

Severon screeches in infernal and walks away from the tree

Airsenhite gets up and walks over to you and asks, "Are you okay? That fall looked pretty painful."

Severon responds with smirk and says "Yeah, I am fine"

"Okay," quick question, does Severon still have the magical presence around him and is it never ending?

There is still a presence, and it is growing stronger

Airsenhite walks over to Billy and asks him in deep speech if he can cast protection from good and evil, Billy says yes but it will be easier if Severon can't fight back so Airsenhite slips out his wand of paralysis and sneakily walks up behind Severon, he rolled a 9 on stealth and you notice Airsenhite about to use his wand of paralysis to paralyze you.

Severon pulls out his soul blade

Airsenhite uses the wand and I'll allow you to make a dexterity saving throw first with advantage.

16

you dodge out of the way, what do you do next?

I will attempt to hide and use druid craft to make a hedge appear

Airsenhite curses in infernal before searching, well he rolled a 22 and found you, he casts the wand again and now you will make a dexterity saving throw.

13 +4