Time Sieve, Mycosynth Lattice, and Rapacious One

Prerequisites

• Time Sieve on the battlefield
• Mycosynth Lattice on the battlefield
• Rapacious One on the battlefield
• Rapacious One does not have summoning sickness
• Rapacious One can not be blocked

Steps

1. Attack with Rapacious One
2. When Rapacious One deals combat damage, it triggers, creating at least five 0/1 Eldrazi Spawn tokens
3. Activate Time Sieve by sacrificing five Eldrazi Spawn creature tokens, taking an extra turn after this one
4. Repeat

Results

• Infinite turns