Originally Posted by
Revenantparadigm
No it's Haste>Crit>Mastery. Mastery isn't great for 2H frost because such a large portion of your damage comes from obliterate which is physical, rather than frost damage.
For both Unholy and 2H Frost I have Blood Tap simming ahead of runic corruption and runic empowerment, though runic corruption remains a decent choice for unholy and empowerment is also good for Frost.
For unholy I'd recommend macroing blood tap, but 2h frost gets better results with manual control so you can use it to increase the number of obliterates that line up with killing machine procs.
And Unholy is most defintely not 'garbage'. Played well it performs comparably to frost and has some good advantages (better execute & sustained AOE)