Harpy

When a Harpy charges into combat, all enemy models in the combat
suffer -5 to their Initiative
(to a minimum of 1) until the end of that Assault phase.

1-3 - Burrow and Hide: The unit immediately Goes to Ground. Units that contain at
least one model with the Fearless special rule treat this result as Prowl (below), instead.

4-5 - Prowl: In the Shooting phase, the unit cannot Run and must instead shoot at the
closest enemy unit that is within range and line of sight of at least one model in the
Tyranid unit. If there is no viable target, the Tyranid unit can do nothing during the
Shooting phase. The unit cannot charge in the Assault phase.

6 - Destroy: This follows all the rules for Prowl (above). In addition, the unit gains the
Preferred Enemy special rule.

If, when the final position of the first blast marker in the barrage is determined, there are
no models (friend or foe) under it, place D3 Spore Mine models anywhere under the blast
marker so that they are in unit coherency and not within impassable terrain or 1” of an
enemy model (any that cannot be placed are lost). These act as a Spore Mine Cluster for
the rest of the game.

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.