Very much so you can't kill Concealed Greenie...you can still trap it. It's a powerful being...and it will take a lot to Trap the beast, yet there's no known way to keep it trapped forever... but using special ingredients...you can trap it long enough for you to escape and plan out this...

Any ancient tree that possesses any type of magic. The purer the better.

Any magic beast's tears. The unholier the better.

Phantom shrubs....you can find these deep in dark places, like graveyards and spooky forests....the strong foul smell the better.

The blood of a Soulfire... a rare thing to find... but perhaps your companions has possession of it...
(only the Greenies not CG and Squishy has it)

A dark room... a dark room will relax the beast making it want to stay comfy longer. It only cares for its own needs after all...or...am I wrong.

Any type of Demon's horn. Just take a huge chunk of it and place it in the next frame shown.

Any type of beast tooth. Such as dragons, demons, any beast with sharp tooth, that has magic in them.
(Your oc's tooth works if they aren't human or just an animal)

A Type 1 Raptorian Whistle...this whistle is long gone...but if you manage to grab it in CG's slumber...you might find it.

(TheAddieDragon currently has a type 5 whistle)

Firstly...create the symbol for the ritual... a circle with a star inside...make sure your in a dark area.

You will place the demon horn of your selection at the top of the star.

Place the phantom shrubs next to the right of the next triangle from the top.

Place the ancient withered branch of your choice on the left side of the next triangle form the top.

Go to the bottom of the right triangle and place the beast's tooth if your choice down.

Go to the left side of the bottom of the star and place the beast's tear of your choice on that side. (It can be in a bottle)

Go into the middle of the circle and place the Soulfire blood there. (Can be in a bottle)

Then play the type 1 Raptorian whistle.... But make sure CG is on the circle. Or it will not work.

If failed the circle will melt and all the supplies will disappear except for the whistle. And if the soul fire blood was in a small bottle of some sort it will also not disappear. And CG will also be alerted by your actions...CG is an intelligent yet cruel beast after all...

If successful. The items will glow. Everything will still be there if you wish to keep the supplies, it will hold CG down for however king you played the whistle. CG won't remember anything but will remember someone did trap them.

They won't know who anyways.