Dark Ceruvim Irisfil

“2 Level 8 monsters Once per turn, you can also Xyz Summon "Dark Ceruvim Irisfil" by using 1 Xyz Monster you control that did not activate its effects in the Monster Zone this turn (transfer its materials). If this card is Xyz Summoned: You can activate this effect; during the Battle Phase of this turn, Xyz Monsters you control gain ATK equal to their Rank x 100. If this card would be destroyed by battle or card effect, you can detach 1 material from a monster you control instead. You can only use this effect of "Dark Ceruvim Irisfil" once per turn.”