Magnet Champion concept
In my opinion, a champion that utilizes magnetism would be super cool. The champion could have abilities that pull or repulse enemies, maybe a snare in there. These abilities would lend to the champion being a support who can be very versatile in a similar manner to Thresh, being able to peel for the carry or engage for the carry. But, like I said, just my opinion; I'm not a game designer, just a man-child with an imagination