Razorwing Flock

Always wounds on 6, regardless of target's Toughness.  These Rending wounds are AP2 but against Vehicles they add D3 Armour Penetration instead.

Swarm model with least wounds is always "closest" target. Double unsaved wounds from Blast and Template weapons (unless Instant Death.)  Not slowed by difficult terrain.

Ignore effects of Night Fighting (p135).