A little footnote: The alternate lines obviously spell out "Bishop" in the initials. This was number 5 in a series which was only ever meant to be 1 - the Q for Queen. I quite liked the idea of using this way of saying bishop since it was oblique in itself, rather than name him.
B
Sort:
Board is set; hand of player
Commands this piece to swoop and there:
Bold icon sails his oblique path,
Delivers diagonal wrath.
Born in shaded halls of power,
This attacker will raze and scour.
Best idea, should hold off plight:
Try keeping safe on squares of white.