Mairsil, the Pretender, Sage of Hours, and Anthroplasm

Prerequisites

• Mairsil, the Pretender on the battlefield
• Sage of Hours in exile
• Anthroplasm in exile
• Mairsil does not have summoning sickness
• each turn available

Steps

1. Activate Mairsil using Anthroplasm's ability by paying and tapping it, removing all +1/+1 counters and putting five +1/+1 counters on Mairsil
2. Activate Mairsil using Sage of Hours's ability by removing five +1/+1 counters, gaining an extra turn after this one
3. Move to your next turn
4. Repeat

Results

• Infinite turns