Board Thread:The Flash discussions/@comment-28219731-20181017011154/@comment-27700324-20181023034507

Yeah, but it doesn't allow him any team work in battle, and it takes a toll on the speed in his system. Reason why he didn't do it to DeVoe was because DeVoe was practically untouchable. With Cicada, it is because his powerset relies on taking people's powers so you don't want to risk using your most powerful move against someone who can just drain it. Plus he still has to train his daughter.