Argothian Elder, Retreat to Coralhelm, and Thawing Glaciers

Prerequisites

• Argothian Elder on the battlefield
• Retreat to Coralhelm on the battlefield
• Thawing Glaciers on the battlefield
• Argothian Elder does not have summoning sickness
• available

Steps

1. Activate Thawing Glaciers by paying and tapping it, searching your library for a basic land card and putting it onto the battlefield tapped
2. The land enters the battlefield, triggering Retreat to Coralhelm, untapping Argothian Elder
3. Activate Argothian Elder by tapping it, untapping Thawing Glaciers and the basic land
4. Activate the basic land by tapping it, adding
5. Repeat

Results

• Near-infinite landfall triggers
• Near-infinite untap of lands you control
• Put all basic lands from your library onto the battlefield