Etrata, the Silencer + Augmenter Pugilist // Echoing Equation

Etrata, the Silencer

Augmenter Pugilist // Echoing Equation

How it works

1. Cast Echoing Equation by paying 3, causing each other creature you control to become a nonlegendary copy of Etrata.
2. Deal combat damage to an opponent with Etrata and two other creatures you control.
3. Etrata and the two creatures trigger.
4. Resolve the first Etrata trigger, exiling a nontoken creature the opponent controls with a hit counter on it, and shuffle Etrata into your library.
5. Repeat step 4 one additional time.
6. Resolve the last Etrata trigger, exiling a nontoken creature the opponent controls with a hit counter on it, shuffle Etrata into your library, and cause the opponent to lose the game.