This thread has been reported for goats.
But seriously, first strike is one of the more confusing abilities. Is there a good reason it's structured the way it is? That is to say, why does whichever First Strike activated first take precedence rather than a FS on both sides canceling out? Also, I've never quite understood what would happen if, say, Claudia banded to Green Simon the Zealot and was blocked by Lot's Wife banded to Goat with Horn.