An epic team comp

Right now I have trouble climbing out of silver and im afraid I will drop to bronze (which i definetly dont want at all) but I was just wondering if anyone has any specific team comps (insane, unusual, etc) that can work in any way which can help me climb a bit. And i know season is almost coming to an end but I just want to stay in silver by the end of this season. Oh and here's a team that I tried before: Top: Yasuo Mid: Fizz Jg: Gragas ADC: Twitch Supp: Zyra This only worked for me because I had people from the same club (Zyra, Fizz and Gragas) and I was the Yasuo but what happened was when we were in a team fight Zyra ults in the middle of the enemy team and Fizz starts his ult at on person and gragas then ult after Zyra ults to knock everyone back into Fizz's ult then I ult after Fizz's ult and the Twitch doesn't do much but i mean he helps if I didn't knock anyone out.