Jungler Main looking for a 5v5 Ranked team

I've been playing league since season 1, I want to start playing the game competitively again it's been around year and a half since I've been on a team. I wanted to get better at the game and improve my skills before I started to play competitively again.

My current champion pool is:

Nunu Gragas Jarvan Vi Rengar

And I'm going on my Rek'sai, Sejuani, and lee sin

IGN: Grimmshow Season 5: Silver 5 Season 4: Silver 3