Trygon Prime

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.

Models with the Synapse Creature special rule have a synapse range of 12". Friendly
Codex: Tyranids models within this synapse range, including the Synapse Creatures
themselves, have the Fearless special rule. If a unit from Codex: Tyranids is falling back
and at least one of the unit's models is within a friendly Synapse Creature's synapse range
before the unit moves, the unit automatically Regroups.

All enemy units and models with the Psyker, Psychic Pilot or Brotherhood of Psykers
special rules suffer a -3 penalty to their Leadership whilst they are within 12" of one or
more models with the Shadow in the Warp 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.