Sharuum the Hegemon, and Hashaton, Scarab's Fist

Prerequisites

• Sharuum the Hegemon in hand
• Hashaton, Scarab's Fist on the battlefield
• available

Steps

1. Discard Sharuum in any way
2. Hashaton triggers, causing you to pay to create a token copy of Sharuum that is a 4/4 black Zombie
3. When the Sharuum token enters the battlefield, it triggers, returning the nontoken Sharuum from your graveyard to the battlefield
4. Put the nontoken Sharuum into your graveyard due to the legend rule
5. The nontoken Sharuum's enter-the-battlefield ability triggers, returning it from your graveyard to the battlefield
6. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite death triggers