This delightful loop turns simple fungal growth into an engine for infinite sacrifices. Sporoloth Ancient provides the critical infrastructure by granting your creatures the ability to turn spore counters into Saprolings, while Fungal Bloom steps in to rapidly feed those counters back onto your Fungus. The real catalyst here is Vorinclex, Monstrous Raider, whose static doubling ability turns Fungal Bloom's investment into an excess of counters, and Elspeth, Storm Slayer magnifies the resulting token output even further so you generate twice as many Saprolings as you started. Finally, sacrificing those tokens to Phyrexian Altar generates the green mana needed to keep the Bloom active, creating a closed loop that floods the battlefield infinitely.