This crafty loop transforms graveyard recycling into a self-sustaining engine by letting Slimefoot and Squee pull both itself and Selvala, Heart of the Wilds straight back from the graveyard. Phantom Train provides the crucial sacrifice outlet to bin your key creatures while conveniently dodging summoning sickness through Thousand-Year Elixir's haste-granting static ability. With Selvala tapping for a massive surge of mana and Slimefoot and Squee spawning a fresh Saproling token on every reentry, you have all the fuel needed to continuously pay the resurrection costs and repeat the cycle indefinitely.