Beifong's Bounty Hunters, Yahenni, Undying Partisan, and Shuttlecraft Galileo

Prerequisites

• Beifong's Bounty Hunters on the battlefield
• Yahenni, Undying Partisan on the battlefield
• Shuttlecraft Galileo on the battlefield

Steps

1. Activate Yahenni by sacrificing another nonland creature you control When the creature dies, Beifong's Bounty Hunters triggers, earthbending a land
2. Resolve the Yahenni ability, giving them indestructible until end of turn
3. Activate Yahenni by sacrificing the land When the land dies, Beifong's Bounty Hunters triggers, returning the land from your graveyard to the battlefield tapped
4. When the land enters, Shuttlecraft Galileo triggers, creating a 1/1 red Officer creature token Resolve the Yahenni ability, giving them indestructible until end of turn
5. Repeat

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite landfall triggers