Lonis, Genetics Expert, Jenny Flint, and Bartolomé del Presidio

Prerequisites

• Lonis, Genetics Expert on the battlefield
• Jenny Flint on the battlefield
• Bartolomé del Presidio on the battlefield
• You control at least one Clue

Steps

1. Activate Bartolomé del Presidio by sacrificing the Clue
2. Jenny Flint and Lonis' second ability trigger
3. Resolve the Lonis trigger, putting a +1/+1 counter on any other creature you control
4. Resolve the Jenny Flint trigger, putting a +1/+1 counter on Lonis
5. Lonis' first ability triggers, creating a Clue artifact token
6. Resolve the Bartolomé del Presidio ability, putting a +1/+1 counter on it
7. Repeat

Results

• Infinite +1/+1 counters