Act 7 - wiccanValkyrie is very good, much better than wiccan or qs, BUT, for ACT 7, I feel wiccan is your best option...if I remember correct, there are a lot of paths that the defender shrugs off debuffs or when dashing forward becomes debuff immune a lot of nodes where you need the defender to be suffering from damage over time specifically incinerate... Since hi incinerates are passives, he bypasses those types of things... Additionally, there are a lot of nodes that will armor break you, as well as unblockable ... In the end it's up to you, but I remember those incinerate nodes being a pain upon exploration.. Good luck!