Trample

Some creatures have the ability to trample creatures that are smaller than them. When a creature Tramples, it moves up to up to its skirmish speed, making an attack on each creature whose space it moves through. Targets of a Trample attack are size limited, targeting creatures of at least one size category smaller (and sometimes requiring at least two size categories smaller). If a target is missed by a Trample attack, it gains an Opportunity on the attacker (creatures hit do not gain an opportunity from the attacker's movement).