Ulamog's Dreadsire, Thornbite Staff, and Bartolomé del Presidio

Prerequisites

• Ulamog's Dreadsire on the battlefield
• Thornbite Staff on the battlefield
• Bartolomé del Presidio on the battlefield

Steps

1. Activate Ulamog's Dreadsire by tapping it, creating a 10/10 Eldrazi creature tokens
2. Activate Bartolomé del Presidio by sacrificing the Eldrazi token
3. When the Eldrazi token dies, Ulamog's Dreadsire triggers, untapping Ulamog's Dreadsire
4. Resolve the Bartolomé del Presidio ability, putting a +1/+1 counter on it
5. Repeat

Results

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