Nim Deathmantle, Ashnod's Altar, and Golgari Germination

Prerequisites

• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• Golgari Germination on the battlefield
• You control at least one nontoken creature

Steps

1. Activate Ashnod's Altar by sacrificing another nontoken creature, adding
2. When the creature dies, Golgari Germination and Nim Deathmantle trigger
3. Resolve the Golgari Germination trigger, creating a 1/1 Saproling creature token
4. Activate Ashnod's Altar by sacrificing the Saproling, adding
5. Resolve the Nim Deathmantle trigger from step 2, causing you to pay to return the sacrificed creature from your graveyard to the battlefield, and attach Nim Deathmantle to it
6. Repeat

Results

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