Heavy Cavalry of the Indestructible Insects

1 Level 5 or higher Insect monster + 1 Insect monster Cannot be destroyed by your opponent's card effects. If all face-up monsters you control are Insect monsters (Quick Effect): You can target 2 monsters on the field, including an Insect monster you control; banish them. You can only use this effect of "Heavy Cavalry of the Indestructible Insects" once per turn.