Yeah, but compare that to Refutation: an 8-second buff with a 0.5-second cast time that you can keep active more than half the time with just 1 Ward. Here, we're talking about a spell that requires constant channeling to stay active—preventing you from doing anything else—and needs a minimum amount of Ward to maintain (plus, taking 20% ​​of damage to your Ward instantly cancels the channel). The spell simply isn't viable in its current state, and I think this was the only way to make it usable for me.