This card works well when you add "Galaxy-Eyes Photon Dragon" to a Blackwing deck as the effect will allow you to increase another Blackwing monster's attack to 2000 or more, allowing for an instant special summon, however "Galaxy Eyes Photon Dragon" will need to wait one turn before attacking due to "Sirocco's" effect.
You tribute this card for "Swallow's Nest" after you use its effect to increase the attack of a other Blackwing monster, so you can further increase the attack by activating the effect once again.
If you have two copies of this card and either "Blackwing - Fane the Steel Chain" or "Blackwing - Bora the Spear" face up on the field, you can perform an OTK, similar to one that can be seen in the Anime when they appeared for the first time. Simply use the effects of both "Sirocco"s on "Bora the Spear"("Fane the Steel Chain"} to increase it's ATK by 8000 and attack for game.
If your opponent has no monsters and you want to summon a bunch of Blackwings, including this card, use "Star Blast" to easily summon this card by decreasing just 1 level.
This monster counts your opponent's Blackwings as well, so "Sirocco" can be used as anti-Blackwing tech.
Swarm a lot of Blackwing monsters onto the field including this card and "Blackwing - Fane the Steel Chain" and then use this card's effect to increase "Fane's" ATK to at least 2500. Then attack directly with "Fane" to inflict high damage.