Yedora, Grave Gardener, Ruthless Ripper, and Yahenni, Undying Partisan

Prerequisites

• Yedora, Grave Gardener on the battlefield
• Ruthless Ripper on the battlefield
• Yahenni, Undying Partisan on the battlefield

Steps

1. Activate Yahenni by sacrificing Ruthless Ripper When Ruthless Ripper dies, Yedora triggers, returning Ruthless Ripper from your graveyard to the battlefield face down as a Forest land
2. Resolve the Yahenni ability Activate Ruthless Ripper's morph ability by revealing a black card from your hand, turning it face up
3. Repeat

Results

• Infinite LTB
• Infinite death triggers
• Infinite landfall triggers
• Infinite lifeloss
• Infinite sacrifice triggers