Builder Champion Concept
I've always had an idea for a champion that could build walls like
or
but instead of dissipating after a few seconds, they would stay for at least a longer duration of time such as a few minutes (or be destroyed by an enemy) and it would act like a base gate, allowing allies to freely walk through but denying enemies the ability to pass with out hitting it a few times and breaking it. And maybe it could be paired with a character kit that builds things just like that as maybe a support or something.
Another idea is that it would have to connect to two pieces of terrain in order to be built and couldn't just be placed in the middle of a lane and would have to have a few seconds as build time as to not be able to instantly wall someone off.
Just tossing a few ideas out there.
Let me know what you think!