Lost Jitte, Karn's Bastion, Cryptic Trilobite, and Benevolent Hydra

Prerequisites

• Lost Jitte on the battlefield
• Karn's Bastion on the battlefield
• Cryptic Trilobite on the battlefield
• Benevolent Hydra on the battlefield
• Lost Jitte has at least one charge counter on it
• Cryptic Trilobite has at least one +1/+1 counter on it
• available

Steps

1. Activate Karn's Bastion by paying , putting a charge counter on Lost Jitte and two +1/+1 counters on Cryptic Trilobite
2. Activate Cryptic Trilobite's first ability twice by removing two +1/+1 counters from it, adding that can only be spent to activate abilities
3. Activate Lost Jitte by removing a charge counter from it, untapping Karn's Bastion
4. Repeat

Results

• Infinite proliferate