Fertilid + Tiller Engine + Nissa, Resurgent Animist + Bristly Bill, Spine Sower

Fertilid

Tiller Engine

Nissa, Resurgent Animist

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 Tiller Engine.
2. When the basic land enters, Tiller Engine, Nissa and Bristly Bill trigger.
3. Resolve the Tiller Engine trigger, untapping the basic land.
4. Resolve the Nissa trigger, adding .
5. Resolve the Bristly Bill trigger, putting a +1/+1 counter on Fertilid.
6. Activate the basic land by tapping it, adding 1.
7. Repeat.