All permanents on the battlefield (Phantasmal Image as a copy of Cavalier of Night).
Steps
Activate Blasting Station by sacrificing Phantasmal Image.
When Phantasmal Image dies, its last ability from Cavalier of Night triggers, returning itself from your graveyard to the battlefield as a copy of Cavalier of Night.
When Phantasmal Image enters the battlefield, it triggers Blasting Station and its first triggered ability from Cavalier of Night.
Resolve the Phantasmal Image trigger, choosing not to sacrifice a creature.
Resolve the Blasting Station trigger, untapping it.