Sorry if this was asked before but I only bothered to read the last two pages:
Does UA snapshot damage multipliers like Reap Soul's?
Also: are haste buffs like Berserking relevant to UA at all? Since UA's usage is bottlenecked by Soulshards, I believe haste only affects its burst... So maybe it would be better to cast other things while Berserking is up if that means UA won't lose out on other buffs like pot and etc?