Gyruda, Doom of Depths, Mortuary, and Clone

Prerequisites

• Gyruda, Doom of Depths on the battlefield
• Mortuary on the battlefield
• Clone in hand
• available

Steps

1. Cast Clone by paying , having it enter the battlefield as a copy of Gyruda
2. Put Clone into your graveyard due to the legend rule
3. Mortuary triggers, putting Clone on top of your library from your graveyard
4. Clone's enter the battlefield ability triggers, causing each player to mill four cards and you to return Clone from your graveyard to the battlefield as a copy of Gyruda
5. Repeat from step 2

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill