Activate Blasting Station by tapping it and sacrificing another creature that has an Aura attached to it.
When the creature dies, Cass triggers, returning an Aura that was attached to the creature from your graveyard to the battlefield attached to another creature you control.
When the Aura enters the battlefield, Ajani's Chosen triggers, creating a creature token.
When the creature token enters, Blasting Station triggers, untapping Blasting Station.
Resolve the Blasting Station ability from step 1.
Repeat.
This loop relies on a clever cycle of sacrifice, reattachment, and token generation to dismantle your opponents. You begin by using Blasting Station to sacrifice an enchanted creature, which triggers Cass, Hand of Vengeance to fish the fallen Aura straight out of your graveyard and loop it back onto the battlefield. That returning enchantment immediately rouses Ajani's Chosen, which dutifully pops out a 2/2 Cat token to replace the one you just lost. Best of all, that very same token entering the battlefield automatically readies Blasting Station by untapping it, leaving you free to sacrifice the new Cat and repeat the entire sequence indefinitely for endless damage.