Cannon protection. Point a cannon or two at the Prince, the Dragon dies, Prince follows. Imrik might make his Ward, and if he doesn't you need to hit with what, roughly three cannonballs to kill him on average (so you'd need to fire perhaps seven - one misfire on the first die, one misfire on the second, one that overshoots/undershoots, one saved by the Ward, three to kill him). Neither of them seem particularly good, but Imrik's totally the better choice as he will at least get to use his mean offensive profile. Also, Dragon with ASF and a silly initiative is awesome. ASF Breath Weapons make people cry.