Lathliss, Dragon Queen, Nim Deathmantle, and Ashnod's Altar

Prerequisites

• Lathliss, Dragon Queen on the battlefield
• Nim Deathmantle on the battlefield
• Ashnod's Altar on the battlefield
• You control at least one additional nontoken Dragon
• available

Steps

1. Activate Ashnod's Altar by sacrificing another nontoken Dragon, adding
2. The Dragon dies, triggering Nim Deathmantle, causing you to pay to return the Dragon from your graveyard to the battlefield, and attach Nim Deathmantle to it
3. The Dragon enters the battlefield, triggering Lathliss, creating a 5/5 Dragon creature token
4. Activate Ashnod's Altar by sacrificing the Dragon token, adding
5. Repeat

Results

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