Fertilid, Lotus Cobra, Horizon Explorer, and Beorn's Hospitality

Prerequisites

• Fertilid on the battlefield
• Lotus Cobra on the battlefield
• Horizon Explorer on the battlefield
• Beorn's Hospitality on the battlefield
• available

Steps

1. 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 on the battlefield untapped due to Horizon Explorer
2. When the basic land enters, Lotus Cobra and Beorn's Hospitality trigger
3. Resolve the Lotus Cobra trigger, adding
4. Resolve the Beorn's Hospitality trigger, putting a +1/+1 counter on Fertilid
5. Activate the basic land by tapping it, adding
6. Repeat

Results

• Near-infinite landfall triggers
• Put all basic lands from your library onto the battlefield tapped