Loptr, Shadow of the Generaider Bosses

“You can only control 1 "Loptr, Shadow of the Generaider Bosses". All "Generaider" monsters you control gain 1000 ATK/DEF during your opponent's turn only. During the Main Phase (Quick Effect): You can Tribute 1 "Generaider" monster; Special Summon 1 Level 9 "Generaider" monster with a different name from your Deck. You can only use this effect of "Loptr, Shadow of the Generaider Bosses" once per turn.”