Fertilid + Amulet of Vigor + Tireless Provisioner + Bristly Bill, Spine Sower

Fertilid

Amulet of Vigor

Tireless Provisioner

Bristly Bill, Spine Sower

How it works

1. Activate Fertilid by paying 1 and removing a +1/+1 counter from it, causing you to search your library for a basic land card and put it on the battlefield untapped due to Amulet of Vigor.
2. When the basic land enters, Amulet of Vigor, Tireless Provisioner and Bristly Bill trigger.
3. Resolve the Amulet of Vigor trigger, untapping the basic land.
4. Resolve the Tireless Provisioner trigger, creating a Treasure token.
5. Activate the Treasure by tapping and sacrificing it, adding .
6. Resolve the Bristly Bill trigger, putting a +1/+1 counter on Fertilid.
7. Activate the basic land by tapping it, adding 1.
8. Repeat.

This clever loop turns Fertilid into a self-sustaining land-tutoring engine by feeding its own counter requirement right back into it. Amulet of Vigor ensures the lands you fetch immediately enter untapped so they can help pay for the activation cost, while Tireless Provisioner converts every newly entering land into the mana needed to keep the cycle spinning. Meanwhile, Bristly Bill, Spine Sower acts as the critical engine piece that replaces the counters Fertilid removes, ensuring you never run out of fuel as you pull every basic land straight out of your deck.