So I Urgot An Idea

What if instead of Urgot's current ult, it was a toggle ability that drains mana like Swain's ult, but it enhanced his regular abilities. Like, make his E have a larger area, his Q hits all marked targets, and I don't really know what it'd should do for his W. Maybe have it so you can hold it down to increase the shield in exchange for a 1:1 mana to shield cost. Cap it at a point though, or just have the exchange time on the lower side.