Lonis, Genetics Expert, Bartolomé del Presidio, and Auton Soldier

Prerequisites

• Lonis, Genetics Expert on the battlefield
• Bartolomé del Presidio on the battlefield
• Auton Soldier on the battlefield
• You control at least one Clue token
• Auton Soldier on the battlefield as a copy of Lonis

Steps

1. Activate Bartolomé del Presidio by sacrificing a Clue
2. Lonis and Auton Soldier's second abilities trigger
3. Resolve the Lonis trigger, putting a +1/+1 counter on Auton Soldier
4. Auton Soldier's first ability triggers, creating a Clue artifact token
5. Resolve the Auton Soldier trigger from step 2, putting a +1/+1 counter on Lonis
6. Lonis' first ability triggers, creating a Clue artifact token
7. Resolve the Bartolomé del Presidio ability
8. Repeat

Results

• Infinite +1/+1 counters
• Infinite Clue tokens