Sophina, Spearsage Deserter, and Time Sieve

Prerequisites

• Sophina, Spearsage Deserter on the battlefield
• Time Sieve on the battlefield
• Sophina does not have summoning sickness
• You control at least four other creatures that can attack this turn
• An opponent is unable to block and kill creatures you control

Steps

1. Declare Sophina and at least four other creatures as attackers
2. Sophina triggers, creating at least five Clue tokens
3. Activate Time Sieve by tapping it and sacrificing five Clue tokens, causing you to take an extra turn after this one
4. Repeat each turn

Results

• Infinite turns