To round out all the mage builds I've shared, here is my favorite Keeper build to use on Perilous! The Keeper is best for team play but with this build, it is by no means purely a support character. Using this build, I've duo-d Perilous...
mage
Did anyone else struggle-bus their way through every choice in Dragon Age: Inquisition? For some reason, I found the decisions more difficult in this game than they were in any.