Nim Deathmantle, Ashnod's Altar, and Twisted Sewer-Witch

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Twisted Sewer-Witch on the battlefield
• available

Steps

1. Activate Ashnod's Altar by sacrificing Twisted Sewer-Witch, adding
2. When Twisted Sewer-Witch dies, Nim Deathmantle triggers, causing you to pay to return Twisted Sewer-Witch from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. When Twisted Sewer-Witch enters the battlefield, it triggers, creating a 1/1 Rat creature token, and then creating a Wicked Role Aura token attached to each Rat you control
4. Activate Ashnod's Altar by sacrificing the Rat, adding
5. The Wicked Role token triggers, causing each opponent to lose 1 life
6. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite lifeloss
• Infinite LTB
• Infinite sacrifice triggers