Rakken ponders for a moment of helping the Bishop out, but hesitates: If Rakken were to try to help, it would involve him using dark magic, and the CCDJ (Church of Crystal Dragon Jesus) frowns upon using dark magic. Ortham also frowns upon dark magic. So saving the Ortham Bishop with dark magic would be extremely ironic, which made Rakken giggle a little inside. And by "giggle inside" I mean "break out laughing and rolling on the floor."
If no one else kills the Wyvern Rider on P16, Rakken will move to O17 and attack it.