Fertilid + Amulet of Vigor + Lotus Cobra + Roaring Earth

Fertilid

Amulet of Vigor

Lotus Cobra

Roaring Earth

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, Lotus Cobra and Roaring Earth trigger.
3. Resolve the Amulet of Vigor trigger, untapping the basic land.
4. Resolve the Lotus Cobra trigger, adding .
5. Resolve the Roaring Earth trigger, putting a +1/+1 counter on Fertilid.
6. Activate the basic land by tapping it, adding 1.
7. Repeat.