Time Sieve, and Legion Loyalty

Prerequisites

• Time Sieve on the battlefield
• Legion Loyalty on the battlefield
• You have at least two opponents
• You control a number of nonlegendary artifact creatures that do not have summoning sickness equal to five divided by the number of opponents you have minus one, rounded up
• Opponents cannot block and kill creatures you control

Steps

1. Declare any number of nonlegendary artifact creatures as attackers
2. Each creature's myriad ability triggers, creating a token copy of each creature attacking each other opponent
3. Activate Time Sieve by tapping it and sacrificing five of the creature tokens, causing you to take an extra turn after this one
4. Repeat each turn

Results

• Infinite turns