Warpstone Flux Rating: ⭐️⭐️⭐️
3/5 stars. The rules are average.
The Fires of Heaven. The ability to take inferno pistols instead of plasma pistols is a nice touch and one that I can see many Blood Angels players opting for. Yes, it does have a short range, but it can come in handy beyond just tank busting.
Perdition Weapons. For a very small points cost increase, exchanging power weapons for perdition weapons is probably a no brainer -- the addition of Brutal (2) is excellent for the price.
Iliastus Assault Cannon. One of a couple of legions to be able to take this upgrade, getting assault 4 with rending is a nice way to upgrade flamers and will be tempting, but there's that pesky malfunction rule on these otherwise great weapons. Should be fine though.
There's no special consul for the Blood Angels and I feel they miss out in this department compared to other legions. The armoury is sound enough otherwise, without being mind-blowingly amazing. I do like the perdition weapons a lot myself.