Archelos, Lagoon Mystic, Thawing Glaciers, Retreat to Coralhelm, and Wind Zendikon

Prerequisites

• Archelos, Lagoon Mystic on the battlefield
• Thawing Glaciers on the battlefield
• Retreat to Coralhelm on the battlefield
• Wind Zendikon on the battlefield
• Wind Zendikon attached to Thawing Glaciers
• Thawing Glaciers does not have summoning sickness
• Archelos is untapped

Steps

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

Results

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