Activate Blasting Station by tapping it and sacrificing Flayer of the Hatebound
When Flayer of the Hatebound dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
When Flayer of the Hatebound enters, it and Blasting Station triggers.
Resolve the Flayer of the Hatebound trigger, dealing damage equal to its power to any target.
Resolve the Blasting Station trigger, untapping it,.
Activate Blasting Station by tapping it and sacrificing Flayer of the Hatebound
When the creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Repeat steps 3 through 5 once.
Resolve the Blasting Station abilities from step 1 and 6.
Repeat.
This elegant engine relies on a clever interplay of recursion and damage to melt your opponents away. While Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight provides the pivotal static support of giving your creature spells convoke on its front side and bestowing persist onto your other nontoken creatures on its reverse, Flayer of the Hatebound acts as the primary catalyst by bringing its own undying ability to the loop. Each time Flayer of the Hatebound is sacrificed to Blasting Station, these contrasting counters interact to reset its mortality: the +1/+1 and -1/+1 or -1/-1 states constantly cancel out or alternate, allowing the creature to repeatedly die and return from the graveyard. Every single recursion fuels Blasting Station's untap trigger while letting Flayer of the Hatebound deal lethal damage equal to its power to any target until the table is cleared.