Lathliss, Dragon Queen, Bladewing's Thrall, Umbral Collar Zealot, and Conspiracy

Prerequisites

• Lathliss, Dragon Queen on the battlefield
• Bladewing's Thrall in hand
• Umbral Collar Zealot on the battlefield
• Conspiracy on the battlefield
• available

Steps

1. Cast Bladewing's Thrall by paying
2. When Bladewing's Thrall enters the battlefield, Lathliss triggers
3. Holding priority, activate Umbral Collar Zealot 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 creature tokens
• Infinite surveil 1