I can get to the second part of the fight with the 5 but no further. It wants me to channel aether into Alisale but I have no idea how I'm supposed to do that. The game is not clear at all on how to do it, it just keeps telling me to do it without telling me how to do so. Can anyone help me? I know this seems like a silly question that I should know the answer to, but this is my first character and first time on this quest and sometimes things that should be obvious aren't for me.