Activate Blasting Station by tapping it and sacrificing Iridescent Drake.
When Iridescent Drake dies, Shade's Form triggers, returning Iridescent Drake from your graveyard to the battlefield.
When Iridescent Drake enters the battlefield, it and Blasting Station trigger.
Resolve the Blasting Station trigger, untapping it.
Resolve the Iridescent Drake trigger, returning Shade's Form from your graveyard to the battlefield attached to Iridescent Drake.
Resolve the Blasting Station ability from step 1, dealing 1 damage to any target.
Repeat.
This elegant loop turns Iridescent Drake into a self-sustaining projectile by leveraging Shade's Form's persistent resurrection ability every time the creature bites the dust. As the Drake continuously cycles between the battlefield and the graveyard, its mandatory entry trigger ensures that the Aura is safely reattached with every iteration. Meanwhile, Blasting Station acts as both the executioner and the engine, using its sacrifice outlet to trigger the cycle and its untap ability to reset itself indefinitely.