This loop is all about translating astronomical toughness into an unstoppable engine of mana and tokens. You start by sacrificing The Pride of Hull Clade to Phyrexian Altar, generating a mana to fuel the loop while sending your commander back to the command zone—where its cost-reduction ability shines. Thanks to The Skullspore Nexus sitting on your battlefield, every single time The Pride of Hull Clade hits the graveyard, the Nexus triggers to create a Fungus Dinosaur token based on that massive toughness (which conveniently helps discount the commander's next casting cost even further). By continually recasting The Pride of Hull Clade for a mere single mana and feeding it right back to the Altar, you generate infinite colored mana, infinite tokens, and endless death triggers.