Oh yeah, I would love to use my 9 Obliterators too. I figure a Herald of Tzeentch or 2 wouldn't hurt to make sure that S

shot hits the target.
I do love Biker Psykers. But apparently flyers can come in Turn 1 in
Apoc. so I'm very inclined to make the Dreadclaw now. I don't think I can get a Chaos Thunderhawk made and have it look good for quite a while, so that will have to wait til next year

Plus I could use Ahriman in a Dreadclaw, which I just thought of, as I can't give him a bike or anything. At least if that power gets Denied, he could shoot 2 more Witchfires.
The Chaos psychic choir power is a 48" range Assault X power, where X = 1 to 3 sacrificed Sorcerers equals the number of small S

/AP1 Vortex blasts. So gotta have probably at least 6 to 9 Chaos Sorcerers in there...definitely among the most expensive single shooting attacks in the game!