Oh my goodness it's not even a big nerf. I understand the frustration but seriously. If you play Zen and actually like him as a character then this nerf will do nothing to you. He is not ruined. He will not be removed from the meta somehow by his SECONDARY fire speed taking a little reduction. It's not meant to be used as his primary method of damage, and with the discord orb the move will still do a buttload of damage.