I'm trying to learn this negative-edge stuff. I see Scar doing combos midscreen for a bar. Is there a guide on how to do those? And why is it best to not to use the second set of grendades in the same combo?
Usually I don't find it worth it to use 1 bar for midscreen combos, they add like 2-3% at best. If you tell me which combo you're referring to I can explain it. Here's the most damaging one that I know of (nerfed dmg since then):
There are also some 1 bar combos on the first page of the thread, click "1 meter" to expand those.
Using more than 3 grenades in a combo is rarely worth it, since the damage scales very hard. I see scar do it in the corner and midscreen and honestly I don't get it at all. My midscreen bnbs do more than scars combos with 4 grenades mid screen, and him using 5 grenades in the corner does about same damage as i use with 3 but sacrifices OKI, sacrifices resources (2 grenades extra wasted) etc. I don't get, so perhaps ask scar why he does that. Imo it is completely useless.
Thank you. Also I will know I get it when I can combo off it right? And when should I reload in the neutral?
I'm not sure I understand what you mean? Basically, throw a grenade and keep holding one, press 4 and then release 1 - press down down fast. If you can do this and get the reload after 4 then you can do the tech. There's no "when to reload" in neutral guide I can give you aside from after combos. Besides after combos, it's basically you playing neutral and feeling when you can get away with it. It's difficult, but you got to learn matchups to learn when you can get away with it.
