If your opponent controls a monster and you control no monsters, you can Normal Summon or Set this card without Tributing. Once per turn you can select 1 Blackwing monster you control. It gains ATK equal to the combined ATK of all other face-up Blackwing monsters. If you use this effect, your other monsters cannot attack this turn.
![Blackwing - Sirocco the Dawn [CRMS-EN010] Common | Shuffle n Cut Hobbies & Games](http://www.shuffleandcutgames.co.nz/cdn/shop/products/28978_200w.jpg?v=1615995889)
