This clever loop turns the graveyard into a conveyor belt straight back to the battlefield, fueled entirely by goblin zeal. By sacrificing Skirk Prospector to its own ability for red mana, you trigger Mortuary, which immediately places the sacrificed goblin right back on top of your library. Thanks to The Reality Chip granting permission to cast spells from the top of your library while attached to a creature, you can use the mana generated by the Prospector to recast it instantly, repeating the cycle for infinite death, sacrifice, and entry triggers.