Looking for Feat (Pathfinder)

[Ravens_cry]

I remember reading a feat (or maybe it wasn't a feat?) that gave you and your mount +1 to damage for every 5 feet your mount moved. Unfortunately, I can't remember what that feat was called or where it was. It might be a third party Pathfinder feat for all I know, but I am sure I remember it.

[Frosty]

I saw that feat once on d20pfsrd.com. You should go look for it there.

[Ravens_cry]

I saw that feat once on d20pfsrd.com. You should go look for it there.
I did, extensively, but I can't find it.
EDIT:
Oh wait, I think I found it. It's a paladin spell (http://www.d20pfsrd.com/magic/all-spells/s/saddle-surge).