You have to simply summon "Yubel-Terror incarnate", in order to destroy every monster on the field except it; after that, if you want to do a perfect lockdown, try to summon "Sacred Phoenix of Nephthys" and, every turn, you can destroy every card on the field, while the phoenix will be summoned on your side on the field every turn, by the fantastic effect of Yubel's 2nd form.