If, when a Trygon (or Trygon Prime) deploys via Deep Strike, it scatters on top of impassable terrain or another model (friend or foe), reduce the scatter distance by the minimum required to avoid the obstacle. After the Trygon (or Trygon Prime) has emerged, mark the position under the creature's base with a suitable marker - this represents the tunnel left by its emergence. Any friendly Tyranid Infantry unit that arrives from reserve in subsequent turns may emerge from the Trygon's tunnel instead of arriving from reserve as normal. Only one unit may emerge from each tunnel marker each turn. If any unit chooses to do so, place the entire unit so that all of its models are wholly within 6" of the centre of the marker and in unit coherency. These models cannot be placed within 1" of enemy models or within impassable terrain; if any models cannot be placed, these excess models are removed as casualties. A unit may not move or charge on the same turn it arrives from a Trygon's tunnel, but may shoot or Run.
1-3 - Cannibalistic Hunger: The unit immediately suffers a number of hits equal to the number of models in that unit. These hits are resolved using the unit's majority Strength (if drawn, use the highest) and AP-. Wounds are allocated by the owning player and armour saves (but not cover saves) may be taken. After resolving casualties (if any) the unit can do nothing else until the end of its turn. Units consisting of only a single model treat this result as Devour (below), instead. 4-5 - Devour: In the Shooting phase, the unit cannot shoot or Run. In the Assault phase, if the unit is able to declare a charge, it must do so against the closest viable enemy unit. If the unit cannot declare a charge, it does nothing in the Assault phase. 6 - Kill: This follows all the rules for Devour (above). In addition, the unit gains the Rage special rule.
All of the close combat attacks, except Hammer of Wrath attacks, of a model with this special rule are resolved at AP2 (unless it's attacking with an AP1 weapon). Additionally, when it makes its close combat attacks, it can choose instead to make a single Smash Attack. If it does so, roll To Hit as normal, but resolve the Attack at double the model's Strength (to a maximum of 10). Furthermore, a model making a Smash Attack can re-roll its armour penetration rolls, but must abide by the second result.
Monstrous Creature
5
3
6
4
8
3+