system
A chat on 4chan
human
Okay, you say you want to see if it works. If you want to do that and only that, Ouija is the easiest and safest. Frankly I'd recommend you start there, if you want to go twelve rounds with a professional the first time you lace up your gloves, then it depends on what you want the effect to be. 

If Ouija's too tame for you and you're not looking to fuck your life up, it would be cool to get a member of your local clergy to exorcise the place. I'd watch a livestream of that.
gpt
Yeah so im poor and not gonna spend much money on a ouiji board and shit like. For now at least. As far as the desired effect goes, summon an entity. Good evil whatever. I wanna summon something