({1} magic symbol) ({R} magic symbol) ({W} magic symbol) ({B} magic symbol) plus enough mana to pay for commander tax, if applicable, or an additional ({R} magic symbol) , ({W} magic symbol) or ({B} magic symbol) if you haven't cast Jirina from the command zone this game available.
Steps
Cast Jirina from the command zone by paying ({1} magic symbol) ({R} magic symbol) ({W} magic symbol) ({B} magic symbol) plus commander tax, if applicable.
When Jirina enters the battlefield, it, Blasting Station and Mana Echoes trigger.
Resolve the Blasting Station trigger, untapping it.
Resolve the Jirina trigger, creating a 1/1 Human Soldier creature token for each time you've cast Jirina from the command zone this game.
When the Human Soldiers enter the battlefield, Mana Echoes and Blasting Station trigger that many times.
Resolve the first Mana Echoes trigger, adding ({C} magic symbol) for each Human and Soldier you control.
Repeat step 6 for each remaining Mana Echoes trigger created in steps 2 and 4.
Holding priority, activate Blasting Station by tapping it and sacrificing Jirina.
Choose to return Jirina to the command zone from your graveyard.
When Jirina dies, Pitiless Plunderer triggers, creating a Treasure token.
Resolve the Blasting Station ability from step 8, dealing 1 damage to any target.
Resolve a Blasting Station trigger from step 5, untapping it.
Holding priority, activate Blasting Station by tapping it and sacrificing a Human Soldier.
When the Human Soldier dies, Pitiless Plunderer triggers, creating a Treasure token.
Resolve the Blasting Station ability from step 13, dealing 1 damage to any target.
Repeat from step 12 one additional time if you control a Human Soldier.
Activate Blasting Station twice by sacrificing Jirina and a Human Soldier.
Activate up to three Treasures by tapping and sacrificing them, adding any combination of ({R} magic symbol) , ({W} magic symbol) and ({B} magic symbol) .