darkbard
Legend
As for combat stunts hmmm improvised leaping on someones mule and spur it into a nasty kick towards some end or perhaps using the mount as a spring board for a high leap.
[Removing the tongue partially implanted in cheek]: Actually, that makes sense of a kind: Move to enemy mount (rare, I know, but so would be the character who took such a skill power, so I'm making allowances for a DM who would cater to this kind of game some); Practiced Rider to mount; Standard Action to Stunt at DMG 42 Encounter level attack.