Well, like the above person said, most meta ninjas currently fits well in an earth team. So basically, you'd need those ninjas for him to shine. F2P-wise, Lee full bt or Shira 4* brings out the best in earth. P2W wise, you'd want one or all of the following: 6PN, Edo Deidara, Kakuzu EGF, Sutachi, Madara Founder, Shisui, Edo Hiruzen, Edo Itachi, etc. Those are just some meta ninjas that works well together and works well with earth main late game.