During the Declare Battle Formations step, if every model in a unit has this ability, you can set it up in Reserves instead of setting it up on the battlefield. If you do, in the Reinforcements step of one of your Movement phases you can set up this unit anywhere on the battlefield that is more than 9" horizontally away from all enemy models.

If a unit with the Deep Strike ability arrives from Strategic Reserves, the controlling player can choose for that unit to be set up either using the rules for Strategic Reserves or using the Deep Strike ability.

Lone Operative

Unless part of an Attached unit, this unit can only be selected as the target of a ranged attack if the attacking model is within 12".

Stealth

If every model in a unit has this ability, then each time a ranged attack is made against it, subtract 1 from that attack’s Hit roll.

Synapse

If your Army Faction is TYRANIDS, while a TYRANIDS unit from your army is within 6" of one or more friendly SYNAPSE  models, that TYRANIDS unit is said to be within Synapse Range of that model and of your army. While a Tyranids unit from your army is within Synapse Range of your army:

■ Each time that unit takes a Battle-shock test, take that test on 3D6 instead of 2D6.
■ Each time a model in that unit makes a melee attack, add 1 to the Strength characteristic of that attack.

Shadow in the Warp

If your Army Faction is TYRANIDS, once per battle, in either player’s Command phase, if one or more units from your army with this ability are on the battlefield, you can unleash the Shadow in the Warp. When you do, each enemy unit on the battlefield must take a Battle-shock test. Each time an enemy unit takes such a Battle-shock test, if it is within 6" of one or more Synapse units from your army, subtract 1 from that test.

Profiles:

Abilities
Parasitic Infection: Each time an INFANTRY model is destroyed by an attack made with this model’s barbed ovipositor, after this model has finished making its attacks, you can add one new RIPPER SWARMS unit to your army consisting of D3 models and set it up within 3" of this model. If you do, that RIPPER SWARMS unit can be set up within Engagement Range of the destroyed model’s unit (but not within Engagement Range of any other enemy units).
It Itches!: At the start of the Fight phase, select one enemy unit within Engagement Range of this model. That enemy unit must take a Battle-shock test.

Parasitic Infection:

Each time an INFANTRY model is destroyed by an attack made with this model’s barbed ovipositor, after this model has finished making its attacks, you can add one new RIPPER SWARMS unit to your army consisting of D3 models and set it up within 3" of this model. If you do, that RIPPER SWARMS unit can be set up within Engagement Range of the destroyed model’s unit (but not within Engagement Range of any other enemy units).

It Itches!:

At the start of the Fight phase, select one enemy unit within Engagement Range of this model. That enemy unit must take a Battle-shock test.

Unit	M	T	SV	W	LD	OC
Parasite of Mortrex	12"	5	4+	5	8+	1

Modifiers:

append name (Battle-hardened)

and

16+ selections of Experience Points in self (recursive)

30- selections of Experience Points in self (recursive)