N18 Psychoteric Whispers: Cacophony of Silence

[HugeSamples]

I was debating on what power to give my Psy-Gheist, and I decided to calculate the actual effect of Cacophony of Silence.

Cacophony of Silence (Double), Continuous Effect:
While this power is maintained all enemy fighters within 5" of the Psyker must re-roll successful Hit rolls when making a ranged attack.

House of Shadows page 100

To calculate the new miss chance of a ranged attack, I used the following equation:

P(cacophony-miss) = P(miss) + P(hit) * P(miss)

Hit Roll	Miss	Cacophony Miss
2+	16.7%	30.6%
3+	33.3%	55.6%
4+	50.0%	75.0%
5+	66.7%	88.9%
6+	83.3%	97.2%

On paper, this doesn't look as bad as I thought it would.

I thought this would be useful information to share, and I'll give this whisper a go in my next campaign.

 

[Lunarcruiser]

Additional note on this power.
It is as you quote, within 5" of the psyker.
No line of sight required. Give it to a fighter with a Wyrm or cast it through a Thrall and you don't need to be anywhere near the nasty foes.

Once you cast it safely this is one of the better ranged whispers