Discard 1 Winged Beast monster; add 2 "Simorgh" monsters with different Attributes from your Deck to your hand.
You can banish this card from your GY; reveal 1 Winged Beast monster in your hand, and if you do, reduce the Levels of monsters in your hand with that name by 1 for the rest of this turn (even after they are Summoned).
You can only activate 1 "Simorgh Onslaught" per turn.