Lonis, Genetics Expert, Jenny Flint, and Sarcatog

Prerequisites

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

Steps

1. Activate Sarcatog's second ability 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 Sarcatog ability, giving it +1/+1 until end of turn
7. Repeat

Results

• Infinite +1/+1 counters
• Infinitely large Sarcatog until end of turn