The creature can engulf creatures in its path as part of a standard action. It cannot make other attacks during a round in which it engulfs. The creature merely has to move over its opponents, affecting as many as it can cover. Each victim may attempt a Breath save to avoid being engulfed - on a success, they are pushed back or aside (target's choice) as the creature moves forward. Engulfed opponents cannot move, are in danger of suffocating, are trapped within the creature's body until they are no longer pinned, and may be subject to other special attacks from the creature.