Gyruda, Doom of Depths, Mortuary, and Evil Twin

Prerequisites

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

Steps

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