This clever engine turns Dargo, the Shipwrecker into a self-sacrificing loop by leveraging Earthcraft to untap your mana source while Phantom Train provides the graveyard-bound altar. Every time you sacrifice Dargo to Phantom Train, you can simply send him right back to the command zone where his cost-reducing ability and partner identity make him trivial to recast. Meanwhile, Earthcraft lets you tap the freshly cast Dargo to untap a basic Mountain, generating the red mana needed to cast him again and keeping the entire cycle infinitely churning.