This clever loop turns your command zone into an infinite engine by leveraging Dargo, the Shipwrecker's remarkably flexible casting cost and ability to return directly to the command zone upon dying. Relic of Legends serves as a vital mana source, letting you tap Dargo the moment he hits the battlefield to generate the red mana needed to cast him again, while simultaneously turning your legendary creature into a reusable battery. Meanwhile, Phantom Train acts as the sacrifice outlet that conveniently puts Dargo into the graveyard, turning every iteration into a cascade of sacrifice, death, and entry triggers that can easily overwhelm an opponent.