Mairsil, the Pretender, Myr Propagator, Lion's Eye Diamond, and Brudiclad, Telchor Engineer

Prerequisites

• Mairsil, the Pretender on the battlefield
• Myr Propagator in exile
• Lion's Eye Diamond in exile
• Brudiclad, Telchor Engineer on the battlefield
• Mairsil does not have summoning sickness
• available

Steps

1. Activate Mairsil using Myr Propagator's ability by paying and tapping it
2. Holding priority, activate Mairsil using Lion's Eye Diamond's ability by sacrificing Mairsil and discarding your hand, adding
3. Resolve the Mairsil ability from step 1, creating a token copy of it
4. Repeat

Results

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