Activate Selvala by paying and tapping it, adding at least 1.
Activate Shilgengar twice by sacrificing Selvala and Slimefoot and Squee.
Activate Slimefoot and Squee by paying 1 and sacrificing a Saproling, returning it and Selvala from your graveyard to the battlefield.
When Slimefoot and Squee enters the battlefield, it triggers, creating a 1/1 Saproling creature token.
Repeat.
This loop is a masterclass in recycling, using Shilgengar, Sire of Famine as the dark engine to continuously sacrifice and resurrect our board. By feeding Selvala, Heart of the Wilds and Slimefoot and Squee to Shilgengar, we churn out enough Blood tokens to fund massive recursion, while Slimefoot and Squee's own activation happily brings the duo right back alongside a freshly spawned Saproling token. Selvala easily covers the mana costs with her massive taps, fueled by the rising power of our returning threats, and Tannuk, Steadfast Second quietly ensures everything keeps moving at a blistering pace by granting haste to our team.