Trample. With a trample attack, the mammoth can move directly through a target's square, attacking the target as it goes. This is a single action, and the mammoth moves its full speed in a straight line. The mammoth must be at least one size category larger than the target. If the attack misses, the mammoth stops in its tracks. If it hits, the mammoth continues moving, inflicts natural damage, and the target is knocked prone.