Yarus, Roar of the Old Gods, Master of the Veil, and Bartolomé del Presidio

Prerequisites

• Yarus, Roar of the Old Gods on the battlefield
• Master of the Veil on the battlefield
• Bartolomé del Presidio on the battlefield

Steps

1. Activate Bartolomé del Presidio by sacrificing Master of the Veil
2. When Master of the Veil dies, Yarus' second ability triggers, returning Master of the Veil from your graveyard to the battlefield face down, then turning it face up
3. Master of the Veil triggers, turning itself face down
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