Dullahan's Mount

You conjure up a black horse that becomes part of you. You immediately mount when using this ability and upon dismounting, the horse vanishes. While mounted, your movement speed is increased by 30ft and you are considered a large creature, but you may only move in a straight line. When attempting to move through 5ft wide spaces, it is considered difficult terrain for you. You also suffer a -10 penalty to most finesse athletics checks as well as climbing and swimming checks while mounted.

Any attack against the horse is considered an attack against you instead. As the horse is considered part of you, any displacement or teleport abilities move the horse alongside with you. You may dismount by spending 0 AP.