Nim Deathmantle, Ashnod's Altar, and Lazotep Reaver

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Lazotep Reaver on the battlefield
• You do not control an Army
• available

Steps

1. Activate Ashnod's Altar by sacrificing Lazotep Reaver, adding
2. Lazotep Reaver dies, triggering Nim Deathmantle, causing you to pay to return Lazotep Reaver from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. When Lazotep Reaver enters the battlefield, it triggers, creating a 0/0 Zombie Army creature token and putting a +1/+1 counter on it
4. Activate Ashnod's Altar by sacrificing the Zombie Army, adding
5. Repeat

Results

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