Taric needs a friend

Similar to the rework, his W needs another champion for his kit to be used to its fullest. But unlike , it is not as much of a hinderance in that it is a BONUS when bonded not a REDUCTION when not. However, just as needs her bond to be near her to get full use of her kit, Taric needs a friend as well to reach his full potential ( got some patch love and now can cast W on minions). I have to say that I can't fully support his W since it "forces him into a duo lane or requires the Jungler to get a tent", but the rest of his kit looks decent enough.

Quick 2 questions, I can't discern from the video if Taric or his bonded friend need to be stationary for his ult (like a channel) or is it a click and wait (similar to kindred's). Also can it affect allied minions because then sieging a tower would be ridiculously overpowered (from what I got the ult at least lasts for 2 seconds which is more than enough for 5 people to destroy a tower in the mid game especially if minions also are affected)?