Fertilid + Tiller Engine + Lotus Cobra + Obuun, Mul Daya Ancestor

Fertilid

Tiller Engine

Lotus Cobra

Obuun, Mul Daya Ancestor

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, Lotus Cobra and Obuun trigger.
3. Resolve the Tiller Engine trigger, untapping the basic land.
4. Resolve the Lotus Cobra trigger, adding .
5. Resolve the Obuun trigger, putting a +1/+1 counter on Fertilid.
6. Activate the basic land by tapping it, adding 1.
7. Repeat.