Necroduality, Rot Hulk, and Sidisi, Undead Vizier

Prerequisites

• Necroduality on the battlefield
• Rot Hulk in hand
• Sidisi, Undead Vizier in the graveyard
• available

Steps

1. Cast Rot Hulk by paying
2. When Rot Hulk enters, it and Necroduality trigger
3. Resolve the Rot Hulk trigger, returning Sidisi from your graveyard to the battlefield
4. When Sidisi enters, it and Necroduality trigger
5. Resolve the Sidisi trigger, sacrificing it
6. When Sidisi exploits itself, its third ability triggers, causing you to search your library for a card and putting it into your hand
7. Resolve the Necroduality trigger, creating a token copy of Sidisi
8. When the token Sidisi enters, it triggers, sacrificing Rot Hulk
9. When Sidisi exploits Rot Hulk, its third ability triggers, causing you to search your library for a card and putting it into your hand
10. Resolve the Necroduality trigger from step 2, creating a token copy of Rot Hulk
11. When the token Rot Hulk enters, it triggers, returning Rot Hulk from your graveyard to the battlefield
12. Repeat from step 2

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite card draw
• Infinite creature tokens
• Infinite death triggers
• Infinite creature sacrifice triggers
• Return some creature cards from your graveyard to the battlefield