Lathliss, Dragon Queen, Bladewing's Thrall, Thermopod, and Xenograft

Prerequisites

• Lathliss, Dragon Queen on the battlefield
• Bladewing's Thrall in hand
• Thermopod on the battlefield
• Xenograft on the battlefield
• Xenograft on the battlefield with "Dragon" chosen
• available

Steps

1. Cast Bladewing's Thrall by paying
2. When Bladewing's Thrall enters the battlefield, Lathliss triggers
3. Holding priority, activate Thermopod by sacrificing Bladewing's Thrall
4. Resolve the Lathliss trigger, creating a 5/5 Dragon creature token
5. When the Dragon enters the battlefield, Bladewing's Thrall triggers, returning itself from your graveyard to the battlefield
6. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite red mana
• Infinite creature tokens