Sporoloth Ancient + Fungal Bloom + Phyrexian Altar + Primal Vigor + Loading Zone

Sporoloth Ancient

Fungal Bloom

Phyrexian Altar

Primal Vigor

Loading Zone

How it works

1. Activate Fungal Bloom by paying , putting two spore counters on a Fungus you control.
2. Activate a Fungus by removing two spore counters from it, creating two 1/1 Saproling creature tokens.
3. Activate Phyrexian Altar twice by sacrificing two Saprolings, adding .
4. Repeat.

This loop creates a self-sustaining engine of fungal growth by taking advantage of exponential counter multiplication. With both Primal Vigor and Loading Zone in play, Fungal Bloom can invest green mana to place twice as many spore counters on creatures like Sporoloth Ancient. Those accumulated counters are then spent to generate Saproling tokens, whose yields are also doubled by Primal Vigor. Finally, sacrificing those extra tokens to Phyrexian Altar refunds the green mana needed to activate Fungal Bloom again, keeping the cycle going infinitely.