Activate Blasting Station by tapping it and sacrificing Cultivator of Blades.
When Cultivator of Blades dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When Cultivator of Blades enters, its fabricate ability and Blasting Station trigger.
Resolve the Cultivator of Blades ability, putting a +1/+1 counter on it.
Resolve the Blasting Station trigger, untapping it.
Resolve the Blasting Station ability from step 1.
Repeat.
This clever loop turns the cycle of life and death into an endless artillery barrage using Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight to grant persistent immortality. By transforming into Isilu, each of your nontoken creatures gains persist, ensuring that when Blasting Station sacrifices Cultivator of Blades, it immediately bounces right back to the battlefield. Meanwhile, the persist-granted -1/-1 counter is neatly nullified because Cultivator of Blades triggers its own fabricate ability upon re-entry, placing a +1/+1 counter that cancels out the penalty. With Blasting Station untapping on each entry to repeat the whole sequence, you can machine-gun the table down to zero life in one sweeping storm of damage.