This clever loop transforms simple fungal growth into an infinite engine by leveraging a few key amplifiers. While Fungal Bloom seeds your creatures and Phyrexian Altar converts your yields back into the green mana needed to sustain the activation cost, the real magic lies in the static enhancements of your board state. Pir, Imaginative Rascal accelerates the counter accumulation by adding an extra spore counter to your Fungus whenever Fungal Bloom is activated, and Sporoloth Ancient provides the native ability to cash out those counters while granting your Fungi their vital token-generating text. Finally, Mondrak, Glory Dominus doubles every Saproling created into a pair of tokens instead of one, ensuring you always sacrifice two to the Altar while leaving a surplus behind to generate your infinite loop.