Sharuum the Hegemon, and Clever Impersonator

Prerequisites

• Sharuum the Hegemon on the battlefield
• Clever Impersonator in hand
• available

Steps

1. Cast Clever Impersonator by paying
2. Clever Impersonator enters as a copy of Sharuum
3. Put Sharuum into the graveyard due to the legend rule
4. Clever Impersonator triggers, returning Sharuum from your graveyard to the battlefield
5. Put Sharuum into the graveyard due to the legend rule
6. Sharuum enters the battlefield triggers, returning itself from your graveyard to the battlefield
7. Repeat from step 5

Results

• Infinite ETB
• Infinite LTB