Requires

Fertilid must be on the battlefield. Tiller Engine must be on the battlefield. Retreat to Kazandu must be on the battlefield. Stone-Seeder Hierophant must be on the battlefield. You control a land that can tap to produce at least . Fertilid has at least one +1/+1 counter on it. Stone-Seeder Hierophant does not have summoning sickness. Mana needed:

Steps

1. Activate a mana-producing land by tapping it, adding at least .
2. Activate Stone-Seeder Hierophant by tapping it, untapping the land.
3. Activate Fertilid by paying and removing a +1/+1 counter from it, causing you to search your library for a basic land card and put it onto the battlefield tapped.
4. When the basic land enters the battlefield, Tiller Engine and Retreat to Kazandu trigger.
5. Resolve the Tiller Engine trigger, untapping the basic land.
6. Resolve the Retreat to Kazandu trigger, putting a +1/+1 counter on Fertilid.
7. Activate the basic land by tapping it, adding .
8. Repeat.

Results