Skullbriar, the Walking Grave, Illicit Masquerade, Perigee Beckoner, and Bartolomé del Presidio

Prerequisites

• Skullbriar, the Walking Grave on the battlefield
• Illicit Masquerade in hand
• Perigee Beckoner in hand
• Bartolomé del Presidio on the battlefield
• available

Steps

1. Cast Illicit Masquerade by paying
2. When it enters, its first ability triggers, putting an impostor counter on Skullbriar
3. Cast Perigee Beckoner for its warp cost by paying
4. When Perigee Beckoner enters, it triggers, targeting Skullbriar
5. Activate Bartolomé del Presidio by sacrificing Perigee Beckoner
6. Activate Bartolomé del Presidio by sacrificing Skullbriar
7. When Skullbriar dies, Illicit Masquerade's second ability and Skullbriar's ability granted to it by Perigee Beckoner trigger
8. Resolve the Skullbriar trigger, returning it from your graveyard to the battlefield
9. Resolve the Illicit Masquerade trigger, failing to exile Skullbriar as it has left your graveyard and returning Perigee Beckoner from your graveyard to the battlefield
10. Resolve the Bartolomé del Presidio ability from step 5
11. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters on Bartolomé del Presidio