Pitiless Plunderer and Blasting Station on the battlefield.
Eternal Witness and Mitotic Slime in your graveyard.
You control at least one non-Human creature.
({4} magic symbol) ({GW} magic symbol) ({B} magic symbol) ({B} magic symbol) plus enough mana to pay for commander tax, if applicable available.
Steps
Cast Nethroi either from your hand or from the command zone for its mutate cost by paying ({4} magic symbol) ({GW} magic symbol) ({B} magic symbol) ({B} magic symbol) plus commander tax, if applicable, putting it on top of a non-Human creature you control.
When Nethroi enters the battlefield, it and Blasting Station trigger.
Resolve the Blasting Station trigger, untapping it.
Holding priority, activate Blasting Station by tapping it and sacrificing Nethroi.
When Nethroi dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
Resolve the Blasting Station ability, dealing 1 damage to any target.
Resolve the Nethroi trigger from step 2, returning Eternal Witness and Mitotic Slime from your graveyard to the battlefield.
When Eternal Witness and Mitotic Slime enter the battlefield, Eternal Witness triggers once and Blasting Station triggers twice.
Resolve the Eternal Witness trigger, returning Nethroi from your graveyard to your hand.
Resolve the first Blasting Station trigger, untapping it.
Holding priority, activate Blasting Station by tapping it and sacrificing Eternal Witness.
When Eternal Witness dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
Resolve the Blasting Station ability, dealing 1 damage to any target.
Resolve the second Blasting Station trigger from step 8, untapping it.
Activate Blasting Station by tapping it and sacrificing Mitotic Slime.
When Mitotic Slime dies, it and Pitiless Plunderer trigger.
Resolve the Pitiless Plunderer trigger, creating a Treasure artifact token.
Resolve the Mitotic Slime trigger, creating two 2/2 Ooze creature tokens.
When the Oozes enter the battlefield, Blasting Station triggers twice.
Resolve the first Blasting Station trigger, untapping it.
Holding priority, activate Blasting Station by tapping it and sacrificing an Ooze.
When the Ooze dies, it and Pitiless Plunderer trigger.
Resolve the Pitiless Plunderer trigger, creating a Treasure artifact token.
Resolve the Ooze trigger, creating two 1/1 Ooze creature tokens.
When the Oozes enter the battlefield, Blasting Station triggers twice.
Resolve a Blasting Station trigger from step 25, untapping it.
Holding priority, repeat from step 21 one additional time, sacrificing the remaining 2/2 Ooze.
Holding priority, activate Blasting Station by tapping it and sacrificing an 1/1 Ooze.
When the Ooze dies, Pitiless Plunderer triggers, creating a Treasure artifact token.
Resolve the Blasting Station ability from step 28, dealing 1 damage to any target.
Resolve a Blasting Station trigger from step 25, untapping it.
Repeat steps 28 through 30 one additional time.
Resolve the newest Blasting Station ability from step 21, dealing 1 damage to any target.
Resolve the Blasting Station trigger from step 25, untapping it.
Resolve the remaining Blasting Station ability from step 21, dealing 1 damage to any target.
Resolve the Blasting Station trigger from step 19, untapping it.
Resolve the Blasting Station ability from step 15, dealing 1 damage to any target.
Activate the seven Treasures by tapping and sacrificing them, adding ({4} magic symbol) ({GW} magic symbol) ({B} magic symbol) ({B} magic symbol) .