Time Sieve + Legion Loyalty

Time Sieve

Legion Loyalty

How it works

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.