Quote Originally Posted by Abd al-Azrad
Doesn't the Swellhorse's Improved Overrun feat modify its Trample ability? Specifically, it prohibits the Reflex save to avoid, and grants +4 to the Swellhorse's 'unimaginable' Strength check to knock the opponent down?
Aye, had forgotten that bit. This actually makes it easier. Now all it has to do is a simple opposed strength check which is pretty likely to be won by the swellhorse at all times.