Editing Codex - Tyranids: Hungry Swarmhost Edition (section)

===Instinctive Behaviour===
*'''Lurk:'''
**'''1-2 - Survive:''' The unit is treated as having failed a Morale test and must immediately Fall Back.
**'''3-5 - Seek Cover:''' In the Movement phase, the unit is not slowed by difficult terrain, though its models must take Dangerous Terrain tests as normal. In the Shooting phase, the unit can Run, but it can only shoot if it is in a building or area terrain (if the unit is partially within area terrain, only those models within area terrain are allowed to shoot). The unit cannot charge in the  Assault phase.
**'''6  - Stalk:''' This follows all the rules for Seek Cover (above). In addition, the unit gains the Stealth special rule.
**'''Synaptic Bonus - Sensory Synchronization:''' The unit gains the Stealth special rule.

*'''Hunt:'''
**'''1-2 - 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.
**'''3-5 - 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.
**'''Synaptic Bonus - Collective Guidance:''' The unit gains +1 BS

*'''Feed:'''
**'''1-2 - 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.
**'''3-5 - 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.
**'''Synaptic Bonus - Neurokinetic Acceleration:''' The unit gains +1 A.