Combat
Creeping horses dread combat and do not engage in it they can avoid doing so. Should they feel an intruder or group of such intruders threatens the caves they dwell in, they will attempt to separate and ambush them one at a time, creeping up and dropping on them from above.
The latter attack is generally described as a strange sensation, as though a giant pillow, its fluid weight shifting and bouncing up and down had buried its target underneath itself.
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Drop Down (Ex)
A creeping horse clinging to the ceiling of an enclosed space can drop down on foes below itself as a move action. When it hits the ground (taking falling damage, but treating the fall 40 feet shorter than it was) it covers the 10 feet by ten feet area immediately underneath its previous position. Opponents caught under its soft, blubbery body take 8d6 plus another 1d6 points of nonlethal damage per each 10 feet the body of the horse traverses, unless they succeed on a DC 15 Reflex save, which halves the damage.
Furthermore, its odd body cushions the creeping horse's own landing: it never takes more than 4d6 points of damage from landing on an opponent, and it can attempt a DC 15 Fortitude save itself to render half that damage nonlethal. The save DCs are Strength-based.