Jetmir, Nexus of Revels, Skittering Precursor, Sword of the Meek, and Bartolomé del Presidio

Prerequisites

• Jetmir, Nexus of Revels on the battlefield
• Skittering Precursor on the battlefield
• Sword of the Meek on the battlefield
• Bartolomé del Presidio on the battlefield
• You control no more than two additional creatures

Steps

1. Activate Bartolomé del Presidio by sacrificing Sword of the Meek
2. Skittering Precursor triggers, creating a 0/1 Eldrazi Spawn creature token
3. When the Eldrazi Spawn enters the battlefield as a 1/1 due to Jetmir, Sword of the Meek triggers, returning Sword of the Meek from your graveyard to the battlefield attached to the Eldrazi Spawn
4. Resolve the Bartolomé del Presidio ability, putting a +1/+1 counter on it
5. Activate the Eldrazi Spawn by sacrificing it, adding
6. Repeat

Results

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