You see ok, lets ignore all the science that aggressively sughests this is a bad combo. It's still waste, the strongest of them all is the G of course. So taking them all together wont make you higher really. The strongest will give the most dominant effect and you end up wasting your substances. You won't feel the nice high energy of the MDMA if your G dose is high enough. It will probably also interfere with the nice 2CB visuals. Considering that in a lot of ppl weed causes anxiety, MDMA after effect includes anxiety as well there's a high chance for worse blues as well. There's no justification for such combination whatsoever. The drugs that work better combined are very well known and the combinations were heavily tried and reported. Lets not invent new cocktails