Apologies if there has been a good thread/post already, but can't see a good guide for T21 demonic playstyle.
Last tier I was playing mostly ST spec (felblade/chaos blades), but using Demonic in M+. Having just got the 4 set, I've seen some posts talking about Chaos Cleave spec. Having lost the t20 bonuses, is this the go to talent now? Are there any decent 7.3 guides out there based on the demonic playstyle?
For your second question, without the T20 set bonuses, First Blood is behind Chaos Cleave. Also keep in mind that the stat priority will shift to more Critical/Mastery but haste is also still somewhat needed. @Shirofune goes in to good detail and even posted a video there.