Dual Avatar - Empowered Mitsu-Jaku

"Dual Avatar Feet - Kokoku" + 2 "Dual Avatar" monsters
The first time each "Dual Avatar" Fusion Monster you control would be destroyed by battle each turn, it is not destroyed. Once per turn, during your Main Phase: You can return all Spells and Traps your opponent controls to the hand. When a monster effect is activated on your opponent's field while you control 2 or more Fusion Monsters (Quick Effect): You can destroy that monster. You can only use this effect of "Dual Avatar - Empowered Mitsu-Jaku" once per turn.