This intricate loop relies on Muldrotha, the Gravetide allowing you to cast artifacts directly from your graveyard, a process made frictionless by Shuri, Wakandan Inventor reducing their costs. Each time you redeploy your artifact, Displacer Kitten triggers off the noncreature spell to blink Muldrotha, resetting the graveyard permission so you can cast it again. To keep the loop going, Atog happily devours the artifact as it enters, generating a massive creature and sending the artifact right back to the graveyard to start anew.