I’m currently using Restart Ojama to farm him! Standard Ojama farm deck but I’m not using AMA because we don’t need it, I replaced it with a DNA Surgery
Well if he used the Chazz ojama skill he wouldn't need to put ojama country in this deck. I would say use draw sense: low-level to guarantee an ojama to the hand and a potential fusion summon. Or you could use master of fusion skill with Jaden or Zane to add polymerization to your hand