After reading some of the other ideas floating about, I thought it might be fun to take a stab at a hypothetical air superiority Flying Monstrous Creature as well.
Everything below is a work-in-progress, so critique is quite welcome!
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Tyranid Siren (190 points) - Heavy Support
WS: 5,
BS: 3, S: 5, T: 6, W: 4, I: 5, A: 2,
LD: 8,
Sv: 4+
Type: Flying Monstrous Creature
Unit Comp: 1 Tyranid Siren
Biomorphs:
* Rending Claws
* Static Discharge
* Hardened Carapace
Special Rules:
* Instinctive Behavior - Feed
* Aerial Predator
* Midair Collision
* Fleet
Static Discharge:
Range: 18’’, S: 3,
AP: 5, Assault 3, Haywire
The multitude of fine sensory hairs covering the carapace of the Siren constantly harness ambient static electricity and direct it to a set of symbiotic organisms housed in the creature’s thorax. Upon detecting a threat, the stored charge is amplified and discharged in a crackling cascade that disrupts electrical systems and synapses alike, leaving the weakened victim easy prey for the Siren's claws.
Aerial Predator:
Siren are adept at aerial conflict, being originally created to subdue flying prey too large or too fast for other creatures to deal with. They have Preferred Enemy (Flying Monstrous Creature) and may reroll armor penetration rolls against Fliers and Skimmers.
Midair Collision:
A Swooping Siren may attempt to assault Zooming Fliers and Swooping Flying Monstrous Creatures as though they (and the Siren) were in Hover or Glide mode. This is however a potentially dangerous thing to do! After rolling for charge distance (ignoring terrain entirely) but before consolidating into the fight, the Siren must take a Grounding Test to see if its high altitude dive collides with its flying target or misses and crashes it into the ground instead. If successfully passed, move the Siren into base contact and resolve the assault as normal. Hits inflicted by overwatch while using this rule do not require the Siren take a Grounding Test.
Options:
The Siren may exchange its Rending Claws for one of the following:
* Scything Talons………………………………........
Free
* Lash Whips………………………………...............20 points
The Siren may take any of the following:
* Toxin Sacs……………………………….............. 10 points
* Adrenal Glands………………………………........10 points
* Regeneration……………………………….............15 points
* Implant Attack………………………………...........15 points