Pact of the Formless one?

[SpiderCopthe1]

I was going to do Venom in this game as a character concept (Durge, ofc), and while browsing the net for inspiration (in order to reroll my insight checks) I stumbled upon unearthed arcana's Pact of the Formless one https://www.dandwiki.com/wiki/The_Formless_One_(5e_Subclass). When I looked on nexus, I could not find the pact of the formless one anywhere. I tried to make the mod myself, but I can't wrap my head around the software, so I figured I would make the request here. I don't care about the invocations, they'd be cool but I can see how they're difficult to implement. I just want the subclass to be available, since having a symbiote in any capacity sounds f*#@ing rad for this game.