Filia Diabell (MAMO-EN100) [Magnificent Monsters]

Add 1 Level 8 or higher "Diabell" monster from your Deck to your hand, or if only your opponent controls a monster, you can Special Summon it instead. If this card is banished: You can make all "Diabell" monsters you currently control gain 500 ATK. You can only use each effect of "Filia Diabell" once per turn.