First of the Dragonlords

“3 Normal Monsters Must be Fusion Summoned. You can only control 1 "First of the Dragonlords". Cannot be destroyed by battle, and is unaffected by other monsters' effects. Once, while face-up on the field, when a Spell/Trap Card or effect is activated (Quick Effect): You can destroy all Spells and Traps on the field. You can only use this effect of "First of the Dragonlords" once per turn.”