So, if the attacking creature's strength overpowers the defending creature's toughness, and the defending creature's strength overpowers the attacking creature's toughness, both creatures die
Its still worth including, though, if your deck wants to get an extra attack step each turn
Speaking of Phyrexianised cards, we were also lucky enough to pull a Phyrexianised Elesh Norn, Mother of Machines, which is quite a valuable card with a powerful effect
While this effect can only trigger off of each of your opponents once per turn without the use of additional combat phases or double strike, Breeches provides a great payoff for going wide with your Pirates, providing card advantage in the form of your opponents' own cards
This can be an excellent mana sink with some +1/+1 counter creatures