1 Level 8 Insect monster + 1 Level 7 Insect monster

You can only Special Summon "Ultimate Great Insect" once per turn. Must first be either Fusion Summoned, or Special Summoned from your Extra Deck by Tributing 1 Insect monster with 2000 or more DEF equipped with an Equip Card. Cannot be destroyed by battle. Once per turn, during the Battle Phase, if a face-up card is in a Field Zone (Quick Effect): You can destroy all monsters your opponent controls.