Karmic Guide, Elesh Norn, Grand Cenobite, and Harmless Offering

Prerequisites

• Karmic Guide on the battlefield
• Elesh Norn, Grand Cenobite on the battlefield
• Harmless Offering in hand
• available

Steps

1. Cast Harmless Offering by paying , giving control of Elesh Norn to an opponent
2. Cast Karmic Guide by paying
3. Karmic Guide enters the battlefield and dies as a state-based action due to having zero or less toughness
4. Karmic Guide's enter-the-battleifeld ability triggers, returning Karmic Guide from your graveyard to the battlefield
5. Repeat from step 3

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB