Yeah what ThePants999 said about the Libram+Zeal combo not giving stacks. So any fight including Manno/Archi you just have to look at your group comp say for manno (mythic) if your having an issue with imps Zeal in my opinion would be a good choice since you can plan to have some zeal stacks built up. but that also means you wont want to use Libram as a trinket choice on that fight. Just an example your choices are Libram+Fires or <othertrink>+zeal