Patron of the Moon, Wonderscape Sage, Retreat to Coralhelm, and Tiller Engine

Prerequisites

• Patron of the Moon on the battlefield
• Wonderscape Sage on the battlefield
• Retreat to Coralhelm on the battlefield
• Tiller Engine on the battlefield
• Wonderscape Sage does not have summoning sickness
• You control at least one mana-producing land

Steps

1. Activate the mana-producing land by tapping it, adding at least
2. Activate Wonderscape Sage by tapping it and returning the mana-producing land from the battlefield to your hand, causing you to draw a card and discard a card if the land didn't have a nonbasic land type
3. Activate Patron of the Moon by paying , putting the mana-producing land from your hand onto the battlefield
4. When the land enters the battlefield, Tiller Engine and Retreat to Coralhelm trigger
5. Resolve the Retreat to Coralhelm trigger, untapping Wonderscape Sage
6. Resolve the Tiller Engine trigger, untapping the land
7. Repeat

Results

• Infinite card draw
• Infinite self-discard triggers
• Infinite draw triggers
• Infinite looting
• Near-infinite landfall triggers