Gretchen Titchwillow, Oboro Breezecaller, and Gaea's Cradle

Prerequisites

• Gretchen Titchwillow on the battlefield
• Oboro Breezecaller on the battlefield
• Gaea's Cradle on the battlefield

Steps

1. Activate Gaea's Cradle by tapping it, adding at least
2. Activate a land that enters untapped by tapping it, adding at least
3. Activate Oboro Breezecaller by paying and returning the land that taps for from the battlefield to your hand, untapping Gaea's Cradle
4. Activate Gretchen by paying , causing you to draw a card and put the land from step 3 onto the battlefield
5. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite landfall triggers