Rolling Magma Unique Jewel

Greetings, i've been trying to build a 3.19 Rolling Magma build in 3.20, and in the guide the person in question uses Inevitability, rolling magma's unique jewel.
However, i can't seem to find it. I used ctrl + f in 3.20 .19 and .18's content update in the forum, and i did not find anything.

Can someone help me out , and in case of the jewel not existing,tell me if it got susbtituted by another type of ingame item.

Thank you.

Doesn't exist. No substitute. You can get it in Standard though if you play there.

Thanks a lot temjinGold, now i am afraid the build might not be as strong. Guess will have to try it and see for myself.