This clever loop transforms Fertilid's counter-removal ability into a self-sustaining engine by leaning on multiple synergistic permanents. While you spend {1}{G} to activate Fertilid and strip away a +1/+1 counter, The Wandering Minstrel ensures the searched land enters untapped so it can immediately produce {1}. Meanwhile, Tireless Provisioner rewards that new land by generating a Treasure token that you can sacrifice for {G}, while Thranduil's Company replaces the exact counter Fertilid lost and keeps the creature well-fed for continuous activations.